1. Intro to General Chemistry

Metric Prefixes

05 - Metric System Prefixes

Carry out the following conversions.
(c) 65.2 mg = _____ 
= g =
_____ pg

Using your knowledge of metric units, English units, and the 
information on the back inside cover, write down the conversion 
factors needed to convert (c) ps to s

A mammalian HELA cell has a diameter of 2 * 10-5 m. Report the diameter of the cell using the most appropriate prefix on the base unit of meter. (LO 1.5) 
(b) 20 µm

Complete the table. 
a. 1245 kg 1.245 * 106 g 1.245 * 109 mg 
b. 515 km _____dm _____cm 
c. 122.355 s _____ms _____ks 
d. 3.345 kJ _____J _____mJ

Complete the table.
a. 1245 kg 1.245 * 106 g 1.245 * 109 mg
b. 515 km _____dm _____cm
c. 122.355 s _____ms _____ks
d. 3.345 kJ _____J _____mJ

Use prefix multipliers to express each measurement without
exponents.
a. 38.8 * 105 g
b. 55.2 * 10 - 10 s
c. 23.4 * 1011 m
d. 87.9 * 10 - 7 L

Metric Prefixes Song by Peter Weatherall

Use the prefix multipliers to express each measurement without
exponents.
a. 1.2 * 10 - 9 m
b. 22 * 10 - 15 s
c. 1.5 * 109 g
d. 3.5 * 106 L

Convert 0.055 milliseconds to seconds, and write the answer in scientific notation. (LO 1.3)
(a) 5.5 * 10-3 s
(b) 5.5 * 10-4 s 
(c) 5.5 * 10-5 s
(d) 5.5 * 10-7 s

If a room has a volume of 1.15 x 108 cm3, what is the volume in km3?

Complete the following equivalent expressions by filling in the blanks.
(a) 1 km = ____ m
(b) 1m = _____ km
(c) 1 mmol = _____ mol
(d) 1 mol = _____ mmol

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. 
(a) mg/L

If on a certain year, an estimated amount of 4 million metric
tons (1 metric ton = 1000 kg) of nitrous oxide 1N2O2 was
emitted worldwide due to agricultural activities, express this
mass of N2O in grams without exponential notation, using
an appropriate metric prefix.

A house has an area of 195 m2. What is its area in each unit?
a. km2 b. dm2 c. cm2

Bottles of wine sometimes carry the notation “Volume = 75 cL. What does the unit cL mean?

A mammalian HELA cell has a diameter of 2 * 10-5 m. Report the diameter of the cell using the most appropriate prefix on the base unit of meter. (LO 1.5) 
(a) 2 µm

Which quantity in each of the following pairs is smaller?
(c) 2.9 GA or 3.1 * 1015 mA

Prefixes | Introduction to Physics

A virus has a diameter of 5.2 * 10-8 m. What is the most appropriate prefix for reporting the diameter of the virus?

Express the quantity 556.2 * 10 - 12 s in each unit.
a. ms b. ns c. ps d. fs

Use the prefix multipliers to express each measurement without any exponents.a) 32 x 10-13 Lb) 7.3 x 106 g&nbsp;c) 18.5 x 1011 s

Which quantity represents the largest mass? (LO 1.4) 
(a) 2.5 * 107 mg (b) 2.5 * 102 mg (c) 2.5 * 108 ng (d)2.5*10-3kg

Prefix Multiplers - Milli, Centi, Kilo, etc

Convert the following expressions into exponential notation:
(a) 3 terameters (tm)

Use appropriate metric prefixes to write the following measurements 
without use of exponents: (g) 3.552 * 1012 L.

Unit Conversion & The Metric System | How to Pass Chemistry

The radius of an atom of copper (Cu) is about 140 pm.
(a) Express this distance in angstroms 1A 2.

A mammalian HELA cell has a diameter of 2 * 10-5 m. Report the diameter of the cell using the most appropriate prefix on the base unit of meter. (LO 1.5) 
(c) 200 nm

Use appropriate metric prefixes to write the following measurements
without use of exponents: (c) 1.828 * 10-3 s

Use appropriate metric prefixes to write the following measurements 
without use of exponents: (d) 3.523 * 109 m3

Use scientific notation to express each quantity with only the base unit.&nbsp;a) 83 µmb) 193 kgc) 2.7 mmol

A house has an area of 195 m2. What is its area in each unit? 
a. km2 b. dm2 c. cm2 

Carry out the following conversions.
(b) 8.5 cm^3 = _____ m^3 = _____ mm^3

Using your knowledge of metric units, English units, and the 
information on the back inside cover, write down the conversion 
factors needed to convert (c) mg to g

A mammalian HELA cell has a diameter of 2 * 10-5 m. Report the diameter of the cell using the most appropriate prefix on the base unit of meter. (LO 1.5) 
(d) 0.2 mm

Which quantity in the following pair is smaller?

Use scientific notation to express each quantity with only base
units (no prefix multipliers).
a. 35 mL
b. 225 Mm
c. 133 Tg
d. 1.5 cg

Express the quantity 254,998 m in each unit.
a. km b. Mm c. mm d. cm

SUPER EASY way to remember SI Prefixes | Must Watch! - Dr K

Convert the following expressions into exponential notation: 
(d) 8.3 megagrams (mg).

Which quantity in each of the following pairs is larger?
(a) 5.63 * 106 cm or 6.02 * 101 km

Aerogels are transparent, low-density materials that are nearly 99.8% empty space and excellent insulators against hot and cold. The density of a silica-based aerogel is 3.0 mg/cm3. What is the density in units of g/m3? (LO 1.17) 
(a) 3.0 * 10-3 g/m3
(b) 3.0 * 101 g/m3 
(c) 3.0 g/m3
(d) 3.0 * 103 g/m3

THE METRIC SYSTEM | Metric Unit Conversions | SI Units | Chemistry Unit Conversions

Metric Prefixes Example 1

A bedroom has a volume of 115 m3. What is its volume in each
unit?
a. km3 b. dm3 c. cm3

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

Carry out the following conversions.
(a) 5 pm =
_____ cm = _____ nm

How many microliters are in 1 L? In 20 mL?

Basics of Chemistry: Units of measurement in chemistry

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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;

Dimensional Analysis

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;

Temperature

Temperature is a measure of the amount of average kinetic energy of the atoms in a compound.

Metric Prefixes are “labels” that can be placed in front of base units.&nbsp;

Conversion Factors

Conversion Factors represent ratios or fractions composed of different units.&nbsp;

Classification of Matter

Chemistry is the study of matter and the changes it undergoes, with the atom being its basic functional unit.&nbsp;