1. Intro to General Chemistry

Dimensional Analysis

Dimensional Analysis Explained!

The density of polystyrene, a plastic commonly used to make CD cases and transparent cups, is 0.037 lbs/in3. Calculate the density in units of g/cm3.

(c) If an automobile is able to travel 400 km on 47.3 L
of gasoline, what is the gas mileage in miles per gallon?

In the United States, water used for irrigation is measured 
in acre-feet. An acre-foot of water covers an acre to a depth 
of exactly 1 ft. An acre is 4840 yd2. An acre-foot is enough 
water to supply two typical households for 1.00 yr. (a) If desalinated 
water costs $1950 per acre-foot, how much does 
desalinated water cost per liter?

Scientific Notation and Dimensional Analysis

What is the volume in L of a cube with an edge length of 7.0 dm?

Carry out the following conversions. 
(b) How tall in meters is the Willis Tower, formerly called the Sears Tower, in Chicago (1454 ft)?

Complete the table.
a. 355 km>s _____cm>s _____m>ms
b. 1228 g>l _____g>ml _____kg>ml
c. 554 mK>s _____K>s _____mK>ms
d. 2.554 mg>ml _____g>l _____mg>ml

Using Dimensional Analysis, start with the given amount and obtain the end amount by using conversion factors.

Which is larger in each pair, and by approximately how much? 
(d) A centimeter or an inch

Convert the following quantities into SI units with the correct number of significant figures.
(b) 66.31 lb

Gold can be hammered into extremely thin sheets called
gold leaf. An architect wants to cover a 30 m * 25 m ceiling
with gold leaf that is twelve-millionths of a centimeter thick.
The density of gold is 19.32 g>cm3, and gold costs $1654 per
troy ounce 11 troy ounce = 31.1034768 g2. How much will
it cost the architect to buy the necessary gold?

The distance from Earth to the Moon is approximately 
240,000 mi. (c) The speed of light is 
3.00 * 108 m>s. How long does it take for light to travel from 
Earth to the Moon and back again?

Answer the following questions.
(a) An old rule of thumb in cooking says: “A pint’s a pound the world around.” What is the density in g/mL of a sub-stance for which 1 pt = 1 lb exactly

The diameter of a hydrogen atom is 212 pm. Find the length in
kilometers of a row of 6.02 * 1023 hydrogen atoms. The diameter
of a ping pong ball is 4.0 cm. Find the length in kilometers of a
row of 6.02 * 1023 ping pong balls.

Ocean currents are measured in Sverdrups (sv) where 1 sv = 109 m3/s. The Gulf Stream off the tip of Florida, for instance, has a flow of 35 sv.
(a) What is the flow of the Gulf Stream in milliliters per minute?

Weights in England are commonly measured in stones, where 1 stone = 14 lb. What is the weight in pounds of a person who weighs 8.65 stones?

The value of the euro was recently $1.15 U.S., and the price of
1 liter of gasoline in France is 1.42 euro. What is the price of
1 gallon of gasoline in U.S. dollars in France?

Consider the jar of jelly beans in the photo. To get an estimate
of the number of beans in the jar you weigh six beans
and obtain masses of 3.15, 3.12, 2.98, 3.14, 3.02, and 3.09 g.
Then you weigh the jar with all the beans in it, and obtain a
mass of 2082 g. The empty jar has a mass of 653 g. Based on
these data, estimate the number of beans in the jar. Justify
the number of significant figures you use in your estimate.

In January 2006, the New Horizons space probe was launched
from Earth with the mission to perform a flyby study of Pluto.
The arrival at the dwarf planet was estimated to happen after
nine years, in 2015. The distance between Earth and Pluto varies
depending on the location of the planets in their orbits, but
at their closest, the distance is 4.2 billion kilometers (2.6 billion
miles). Calculate the minimum amount of time it takes for a
transmitted signal from Pluto to reach the Earth.

In 2009, a team from Northwestern University and Western
Washington University reported the preparation of a new
“spongy” material composed of nickel, molybdenum, and
sulfur that excels at removing mercury from water. The density
of this new material is 0.20 g>cm3, and its surface area is
1242 m2 per gram of material. (b) Calculate the surface area for
a 10.0-mg sample of this material.

The average U.S. farm occupies 435 acres. How many square
miles is this? (1 acre = 43,560 ft2, 1 mile = 5280 ft)

An ibuprofen suspension for infants contains 100 mg>5.0 mL
suspension. The recommended dose is 10 mg>kg body weight.
How many mL of this suspension should be given to an infant
weighing 18 lb? (Assume two significant figures.)

Perform the following conversions: (d) 0.510 in./ms to km/hr

(d) In March 1989, the Exxon Valdez ran aground and
spilled 240,000 barrels of crude petroleum off the coast of
Alaska. One barrel of petroleum is equal to 42 gal. How many
liters of petroleum were spilled?

In 1986 an electrical power plant in Taylorsville, Georgia, burned 8,376,726 tons of coal, a national record at that time. (a) Assuming that the coal was 83% carbon and 2.5% sulfur and that combustion was complete, calculate the number of tons of carbon dioxide and sulfur dioxide pro- duced by the plant during the year.

Perform each unit conversion.
a. 1.4 in to mm b. 116 ft to cm
c. 1845 kg to lb d. 815 yd to km

If the distance between Washington, D.C. and New York City is 224.9 miles, determine the distance in centimeters.

A person runs at a pace of 6.52 mi/hr. How long does it take the person to run a 15.0 km race? (1 mi = 1.61 km) (LO 1.17) 
(a) 85.7 min 
(b) 222 min
(c) 50.0 min 
(d) 93.4 min

(b) The lung capacity of the blue
whale is 5.0 * 103 L. Convert this volume into gallons.

The distance from Earth to the Moon is approximately
240,000 mi. (a) What is this distance in meters?

The total rate at which power is used by humans worldwide
is approximately 15 TW (terawatts). The solar flux averaged
over the sunlit half of Earth is 680 W>m2 (assuming
no clouds). The area of Earth’s disc as seen from the Sun is
1.28 * 1014 m2. The surface area of Earth is approximately
197,000,000 square miles. How much of Earth’s surface
would we need to cover with solar energy collectors to power
the planet for use by all humans? Assume that the solar energy
collectors can convert only 10% of the available sunlight
into useful power

The element gallium (Ga) has the second-largest liquid range of any element, melting at 29.78 °C and boiling at 2204 °C at atmospheric pressure.
(a) What is the density of gallium in g/cm3 at 25 °C if a 1 in. cube has a mass of 0.2133 lb?

Hydrogen cyanide, HCN, is a poisonous gas. The lethal dose is 
approximately 300 mg HCN per kilogram of air when inhaled. 
(c) HCN forms when synthetic fibers containing Orlon® or Acrilan 
® burn. Acrilan® has an empirical formula of CH2CHCN, 
so HCN is 50.9% of the formula by mass. A rug measures 
3.5 * 4.5 m and contains 850 g of Acrilan® fibers per square 
yard of carpet. If the rug burns, will a lethal dose of HCN be 
generated in the room? Assume that the yield of HCN from 
the fibers is 20% and that the carpet is 50% consumed.

The source of oxygen that drives the internal combustion
engine in an automobile is air. Air is a mixture of gases, principally
N2179%2 and O2120%2. In the cylinder of an automobile
engine, nitrogen can react with oxygen to produce
nitric oxide gas, NO. As NO is emitted from the tailpipe of
the car, it can react with more oxygen to produce nitrogen
dioxide gas. (b) Both nitric oxide and nitrogen dioxide are
pollutants that can lead to acid rain and global warming;
collectively, they are called “NOx” gases. In 2009, the United
States emitted an estimated 19 million tons of nitrogen dioxide
into the atmosphere. How many grams of nitrogen
dioxide is this?

The physical fitness of athletes is measured by “VO2 max,”
which is the maximum volume of oxygen consumed by an
individual during incremental exercise (for example, on a
treadmill). An average male has a VO2 max of 45 mL O2>kg
body mass/min, but a world-class male athlete can have a VO2
max reading of 88.0 mL O2>kg body mass/min. (a) Calculate
the volume of oxygen, in mL, consumed in 1 hr by an average
man who weighs 85 kg and has a VO2 max reading of 47.5 mL
O2>kg body mass/min.

Answer the following questions.
(b) There are exactly 640 acres in 1 square mile. How many square meters are in 1 ac

 If the radius is doubled, the area also doubles. 

 The area more than doubles based on the line on the grid. 

 The area is inversely related to the radius. 

 As the radius increases, the corresponding area increases based on the line on the grid. 

If the radius is 8, the area is 200 in2.

Correct, this radius corresponds to an area of 200 in2.

Based on the graph, Area = Radius2.

Although the units of area are in2 and radius in, the relationship is more complicated than that given just by the units.

 There is only one statement that is correct. 

 Locate the points cited and use the grid on the graph to determine their relationship. 

Examine the following graph.<img src="https://media.pearsoncmg.com/ph/esm/esm_tro_chemistry_6/msa/content/practice-quiz/img/troama5_pq_c1q20_chart.png " alt="Graph of Area in square inches on the vertical axis and Radius on the horizontal axis. The line on the graph starts at the lower left at the horizontal axis and increases with increasing slope from left to right." class=”block”>Which of the following is correct?

A large tanker truck for carrying gasoline has a capacity of 3.4 * 104 L. 
(a) What is the tanker’s capacity in gallons?

A bag of Hershey’s Kisses contains the following information: Serving size: 9 pieces = 41 g Calories per serving: 230 Total fat per serving: 13 g 
(a) The bag contains 2.0 lbs of Hershey’s Kisses. How many Kisses are in the bag?

Carry out the following conversions. 
(a) How many grams of meat are in a quarter-pound hamburger (0.25 lb)?

A period at the end of sentence written with a graphite pen-cil has a diameter of 1 mm. How many carbon atoms would it take to line up across the period if a single carbon atom has a diameter of 150 pm?

Perform the following conversions: (e) 22.50 gal/min to L/s

Dimensional Analysis: Converting Units with 1 or 2 Conversion Factors

The Honda Insight, a hybrid electric vehicle, has an EPA gas
mileage rating of 41 mi>gal in the city. How many kilometers
can the Insight travel on the amount of gasoline that would fit
in a soda can? The volume of a soda can is 355 mL.

(a) A bumblebee flies with a ground speed of 15.2 m/s. Calculate
its speed in km/hr.

A 1/4-inch-thick lead sheet is used for protection from medi-cal X rays. If a single lead atom has a diameter 350 pm, how many atoms thick is the lead sheet?

(b) The recommended adult dose
of Elixophyllin®, a drug used to treat asthma, is 6 mg/kg of
body mass. Calculate the dose in milligrams for a 185-lb
person.

Perform the following conversions: (a) 5.00 days to s

(d) An individual suffering from a high cholesterol 
level in her blood has 242 mg of cholesterol per 100 mL of 
blood. If the total blood volume of the individual is 5.2 L, 
how many grams of total blood cholesterol does the individual’s 
body contain?

The radius of an atom of tungsten (W) is about 2.10 A .
(b) How many tungsten atoms would have to be
lined up to create a wire of 2.0 mm?

(a) How many liters of wine can be held in a wine barrel
whose capacity is 31 gal?

A penny has a thickness of approximately 1.0 mm. If you
stacked Avogadro’s number of pennies one on top of the other
on Earth’s surface, how far would the stack extend (in km)?
[For comparison, the sun is about 150 million km from Earth
and the nearest star (Proxima Centauri) is about 40 trillion km
from Earth.]

What is the volume in mL of a cube with an edge length of 2.5 cm?

(d) Bamboo can grow up to 60.0 cm/day. Convert
this growth rate into inches per hour.

The diameter of a rubidium atom is 495 pm We will consider
two different ways of placing the atoms on a surface. In arrangement
A, all the atoms are lined up with one another
to form a square grid. Arrangement B is called a close-packed
arrangement because the atoms sit in the “depressions”
formed by the previous row of atoms:

(a) Using arrangement A, how many Rb atoms could be placed
on a square surface that is 1.0 cm on a side?

In a sunny location, sunlight has a power density of about
1 kW/m2. Photovoltaic solar cells can convert this power into
electricity with 15% efficiency. If a typical home uses 385 kWh
of electricity per month, how many square meters of solar cells
are required to meet its energy requirements? Assume that electricity
can be generated from the sunlight for 8 hours per day.

▲ What area of solar cells do you need to power a home?

Carry out the following conversions. 
(c) How large in square meters is the land area of Australia (2,941,526 mi^2)?

Very small semiconductor crystals, composed of approximately 
1000 to 10,000 atoms, are called quantum dots. 
Quantum dots made of the semiconductor CdSe are now 
being used in electronic reader and tablet displays because 
they emit light efficiently and in multiple colors, depending 
on dot size. The density of CdSe is 5.82 g/cm3. 
(e) If you wanted to make one 6.5-nm dot from multiple 
2.5-nm dots, how many 2.5-nm dots would you need, 
and how many CdSe formula units would be left over, 
if any?

Concentrations of substances dissolved in solution are often expressed as mass per unit volume. For example, normal human blood has a cholesterol concentration of about 200 mg/100 mL. Express this concentration in the following units. 
(e) How much total blood cholesterol in grams does a per-son have if the normal blood volume in the body is 5 L?

A gas can holds 5.0 gal of gasoline. Express this quantity in cm3.

Convert the following quantities into SI units with the correct number of significant figures.
(e) 978.3 yd3

The world record for the women’s outdoor 20,000-meter run, set in 2000 by Tegla Loroupe, is 1:05:26.6 (seconds are given to the nearest tenth). What was her average speed, expressed in miles per hour with the correct number of significant figures? (Assume that the race distance is accurate to 5 significant figures)

The distance from Earth to the Moon is approximately 
240,000 mi. (d) Earth travels around 
the Sun at an average speed of 29.783 km>s. Convert this 
speed to miles per hour.

Lipitor, a pharmaceutical drug that has been shown to lower “bad” cholesterol levels, while boosting “good” cholesterol levels had over $12 billion in sales last year. Each pill weighs 2.5 g, which contains 4.0% of the active ingredient by mass. What mass in kg of the active ingredient is present in one bottle of 120 pills?

A certain European automobile has a gas mileage of 17 km>L.
What is the gas mileage in miles per gallon?

An acetaminophen suspension for infants contains 80 mg>
0.80 mL suspension. The recommended dose is 15 mg>kg body
weight. How many mL of this suspension should be given to
an infant weighing 14 lb? (Assume two significant figures.)

The estimated concentration of gold in the oceans is 1.0 * 10^-11 g/mL.
(b) Assuming that the volume of the oceans is 1.3 * 10^21 L, estimate the amount of dissolved gold in grams in the oceans.

A 40-lb container of peat moss measures 14 * 20 * 30 in. A
40-lb container of topsoil has a volume of 1.9 gal. (b) How many bags of peat moss are needed to
cover an area measuring 15.0 ft * 20.0 ft to a depth of 3.0 in.?

Carry out the following conversions: (e) $3.99/lb to dollars per kg

If Avogadro’s number of pennies is divided equally among
the 321 million men, women, and children in the United
States, how many dollars would each receive?

In the United States, the emissions limit for carbon monoxide in motorcycle engine exhaust is 12.0 g of carbon monoxide per kilometer driven. What is this limit expressed in mg per mile with the correct number of significant figures?

The volume of water used for crop irrigation is measured in acre-feet, where 1 acre-foot is the amount of water needed to cover 1 acre of land to a depth of 1 ft. 
(a) If there are 640 acres per square mile, how many cubic feet of water are in 1 acre-foot?
(b) How many acre-feet are in Lake Erie (total volume = 116 mi^3)?

Perform the following conversions: (f) 0.02500 ft3 to cm3.

A 1.0-ounce piece of chocolate contains 15 mg of caffeine, and a 6.0-ounce cup of regular coffee contains 105 mg of caffeine. How much chocolate would you have to consume to get as much caffeine as you would from 2.0 cups of coffee?

(a) The speed of light in a vacuum is 2.998 * 108 m>s. Calculate
its speed in miles per hour.

(d) When the coffee is brewed according to directions,
a pound of coffee beans yields 50 cups of coffee
14 cups = 1 qt2. How many kg of coffee are required to produce
200 cups of coffee?

A sample of gaseous neon atoms at atmospheric pressure and
0 °C contains 2.69 * 1022 atoms per liter. The atomic radius of
neon is 69 pm. What fraction of the space do the atoms themselves occupy? What does this reveal about the separation between atoms in the gaseous phase?

Ocean currents are measured in Sverdrups (sv) where 1 sv = 109 m3/s. The Gulf Stream off the tip of Florida, for instance, has a flow of 35 sv.
(b) What mass of water in the Gulf Stream flows past a given point in 24 hours? The density of seawater is 1.025 g/mL.

The Ogallala aquifer described in the Closer Look box in Section 18.3, provides 82% of the drinking water for the people who live in the region, although more than 75% of the water that is pumped from it is for irrigation. Irrigation withdrawals are approximately 18 billion gallons per day. (a) Assuming that 2% of the rainfall that falls on an area of 600,000 km2 recharges the aquifer, what average annual rainfall would be required to replace the water removed for irrigation?

Determine the number of picoseconds in 2.0 hours.

Carry out the following conversions: (a) 0.105 in. to mm

The density of iron is 7.86 g>cm3. What is its density in pounds
per cubic inch (lb>in3)?

Convert the following quantities into SI units with the correct number of significant figures.
(c) 0.5521 gal

Ocean currents are measured in Sverdrups (sv) where 1 sv = 109 m3/s. The Gulf Stream off the tip of Florida, for instance, has a flow of 35 sv.
(c) How much time is required for 1 petaliter (PL; 1 PL = 1015 L) of seawater to flow past a given point?

A period at the end of sentence written with a graphite pen-cil has a diameter of 1 mm. If the period represented the nucleus, approximately how large is the diameter of the entire atom in units of m?

Carry out the following conversions: (d) 1.955 m3 to yd3

(a) Assuming the dimensions of the nucleus and atom
shown in Figure 2.10, what fraction of the volume of the atom
is taken up by the nucleus?

The world’s record in the 100-m dash is 9.69 s, and in the 100-yd
dash it is 9.21 s. Find the speed in mi>hr of the runners who set
these records. (Assume three significant figures for 100 m and
100 yd.)

Among many alternative units that might be considered as a measure of time is the shake rather than the second. Based on the expression “faster than a shake of a lamb’s tail,” we’ll define 1 shake as equal to 2.5 * 10-4 s. If a car is traveling at 55 mi/h, what is its speed in cm/shake

Total U.S. farmland occupies 954 million acres. How many
square miles is this? (1 acre = 43,560 ft2, 1 mi = 5280 ft). Total
U.S. land area is 3.537 million square miles. What percentage of
U.S. land is farmland?

Table salt contains 39.33 g of sodium per 100 g of salt. The U.S.
Food and Drug Administration (FDA) recommends that adults
consume less than 2.40 g of sodium per day. A particular snack
mix contains 1.25 g of salt per 100 g of the mix. What mass of
the snack mix can an adult consume and still be within the FDA
limit? (Assume three significant figures for 100 g.)

Convert the following quantities into SI units with the correct number of significant figures.
(d) 65 mi/h

(c) The
Vehicle Assembly Building at the Kennedy Space Center in
Florida has a volume of 3,666,500 m3. Convert this volume
to liters and express the result in standard exponential notation.

The height of a horse is usually measured in hands instead of in feet, where 1 hand equals 1/3 ft (exactly). 
(b) What is the volume in cubic meters of a box measuring 6 * 2.5 * 15 hands

Administration of digitalis, a drug used to control atrial fibrilla-tion in heart patients, must be carefully controlled because even a modest overdose can be fatal. To take differences between patients into account, drug dosages are prescribed in terms of mg/kg body weight. Thus, a child and an adult differ greatly in weight, but both receive the same dosage per kilogram of body weight. At a dosage of 20 mg/kg body weight, how many mil-ligrams of digitalis should a 160 lb patient receive?

A length of #8 copper wire (radius = 1.63 mm) has a mass of
24.0 kg and a resistance of 2.061 ohm per km (Ω >km). What is
the overall resistance of the wire?

Dimensional Analysis - Explained

Unit Conversion & Dimensional Analysis | How to Pass Chemistry

A large tanker truck for carrying gasoline has a capacity of 3.4 * 104 L. 
(b) If the retail price of gasoline is $3.00 per gallon, what is the value of the truck’s full load of gasoline?

Consider the stack of pennies in the previous problem. How
much money (in dollars) would this represent? If this money were
equally distributed among the world’s population of 7.0 billion
people, how much would each person receive? Would each person
be a millionaire? A billionaire? A trillionaire?

There are exactly 60 seconds in a minute, exactly 60 minutes in
an hour, exactly 24 hours in a mean solar day, and 365.24 solar
days in a solar year. How many seconds are in a solar year? Give
your answer with the correct number of significant figures.

Which is larger in each pair, and by approximately how much? 
(b) A mile or a kilometer

A runner wants to run 10.0 km. Her running pace is 7.5 mi per
hour. How many minutes must she run?

The height of a horse is usually measured in hands instead of in feet, where 1 hand equals 1/3 ft (exactly). 
(a) How tall in centimeters is a horse of 18.6 hands?

A cyclist rides at an average speed of 18 mi per hour. If she wants
to bike 212 km, how long (in hours) must she ride?

Perform the following conversions: (b) 0.0550 mi to m

The Toyota Prius, a hybrid electric vehicle, has an EPA gas mileage rating of 52 mi>gal in the city. How many kilometers can
the Prius travel on 15 L of gasoline?

Convert the following quantities into SI units with the correct number of significant figures.
(f) 2.380 mi^2

The U.S. quarter has a mass of 5.67 g and is approximately
1.55 mm thick. (c) How
much money would this stack contain?

(a) If an electric car is capable of going 225 km on a single
charge, how many charges will it need to travel from Seattle,
Washington, to San Diego, California, a distance of 1257 mi,
assuming that the trip begins with a full charge?

The radius of an atom of tungsten (W) is about 2.10 A .
(a) Express this distance in nanometers (nm).

The radius of an atom of tungsten (W) is about 2.10 A .
(c) If the atom is assumed
to be a sphere, what is the volume in m3 of a single W atom?

Perform the following conversions: (c) $1.89/gal to dollars per liter

How to Use Unit Analysis | Dimensional Analysis

Convert the following quantities into SI units with the correct number of significant figures.
(a) 5.4 in.

The U.S. quarter has a mass of 5.67 g and is approximately
1.55 mm thick. (a) How many quarters would have to be
stacked to reach 575 ft, the height of the Washington Monument?

The radius of an atom of copper (Cu) is about 140 pm. 
(c) If you assume that the Cu
atom is a sphere, what is the volume in cm3 of a single atom?

The distance from Earth to the Moon is approximately
240,000 mi. (b) The peregrine
falcon has been measured as traveling up to 350 km/
hr in a dive. If this falcon could fly to the Moon at this speed,
how many seconds would it take?

(b) The Sears Tower in
Chicago is 1454 ft tall. Calculate its height in meters.

The density of polypropylene, a plastic commonly used to make bottle caps, yogurt containers, and carpeting, is 0.55 oz/in3. Calculate the density in units of g/cm3

The American Dental Association recommends that an adult
female should consume 3.0 mg of fluoride (F - ) per day to prevent
tooth decay. If the fluoride is consumed in the form of sodium
fluoride (45.24% F), what amount of sodium fluoride
contains the recommended amount of fluoride?

Dimensional Analysis Example 1

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2. Atoms & Elements

3. Chemical Reactions

4. BONUS: Lab Techniques and Procedures

5. BONUS: Mathematical Operations and Functions

6. Chemical Quantities & Aqueous Reactions

7. Gases

8. Thermochemistry

9. Quantum Mechanics

10. Periodic Properties of the Elements

11. Bonding & Molecular Structure

12. Molecular Shapes & Valence Bond Theory

13. Liquids, Solids & Intermolecular Forces

14. Solutions

15. Chemical Kinetics

16. Chemical Equilibrium

17. Acid and Base Equilibrium

18. Aqueous Equilibrium

19. Chemical Thermodynamics

20. Electrochemistry

21. Nuclear Chemistry

22. Organic Chemistry

23. Chemistry of the Nonmetals

24. Transition Metals and Coordination Compounds

[BOOK CHEM] Clutch Version

SI Units

The International System of Units (SI) is related to the metric system and is based on seven base units.

Physical & Chemical Changes

A physical change involves a change in the phases of matter, whereas a chemical change involves a change in chemical bonds.&nbsp;

Physical Properties

Physical Properties are measurable properties that describe the state of chemical compounds.&nbsp;

Significant Figures: In Calculations

Significant Figures are often involved in chemical calculations.&nbsp;

Scientific Notation

Scientific Notation is used to turn small or large inconvenient numbers into manageable ones.&nbsp;

Density of Non-Geometric Objects

The density of non-geometric objects can be determined using water displacement.&nbsp;

Density

Density represents the mass of an object or compound within a given volume.&nbsp;

Significant Figures: Precision in Measurements

Significant Figures are used to discuss the level of precision in any measurement.&nbsp;

Intensive vs. Extensive Properties

Intensive Properties are independent and Extensive Properties are dependent on the size or amount of substance present

Density of Geometric Objects

The density of geometric objects generally includes spheres, cubes and cylinders.&nbsp;

Significant Figures

Significant Figures are used to determine some level of accuracy within our recorded measurements.&nbsp;

We use dimensional analysis&nbsp;as a fail proof process to convert from one unit to another.

Chemical Properties

Chemical Properties are observed during chemical reactions.&nbsp;