1. Intro to General Chemistry

SI Units

Units of Measure: Scientific Measurements & SI System

fundamental units | supplementary units |derived units| dimensions of physical quantity #measurement

What is  meaning of SI unit ? // Full Form of SI unit // Idea of seven Basic units

 Correct, this measurement is equivalent to 25.0 meters. 

 There is a longest distance.  Convert all measurements to the same unit and then compare them. 

 Review unit conversions and the meaning of metric prefixes. 

What type of quantity (for example, length, volume, 
density) do the following units indicate? (g) Pa.

Give the derived SI units for each of the following quantities
in base SI units:
(a) acceleration = distance/time2

Identify each of the following as measurements of length, 
area, volume, mass, density, time, or temperature: (a) 25 ps, 
(b) 374.2 mg, (c) 77 K, (d) 100,000 km2, (e) 1.06 mm, 
(f) 16 nm2, (g) -78 °C, (h) 2.56 g>cm3, (i) 28 cm3.

Basics of Chemistry: Units of measurement in chemistry

What SI units are used for measuring the following quanti-ties? For derived units, express your answers in terms of the six fundamental units.
(b) Length

What SI units are used for measuring the following quanti-ties? For derived units, express your answers in terms of the six fundamental units.
(c) Temperature

What SI units are used for measuring the following quanti-ties? For derived units, express your answers in terms of the six fundamental units.
(f) Density

 This is a measurement and involves uncertainty. 

 Correct.  Defined equalities and counted objects do not involve uncertainty. 

 4.2 m involves a measurement and therefore has uncertainty. 

 Which of the following numbers are exact? 

SI Units Concept 1

SI Units of Measurement

What SI units are used for measuring the following quanti-ties? For derived units, express your answers in terms of the six fundamental units.
(e) Energy

"Give the derived SI units for each of the following quantities 
in base SI units: 
(g) energy = mass * 1velocity22"

SI Units and Density

SI Units Concept 2

What type of quantity (for example, length, volume,
density) do the following units indicate? (f) ms-1

Give the derived SI units for each of the following quantities
in base SI units:
(e) power = work/time

What is the difference between a derived SI unit and a funda-mental SI unit? Give an example of each

S.I. base units and derived units

What SI units are used for measuring the following quanti-ties? For derived units, express your answers in terms of the six fundamental units.
(a) Mass

Based on your knowledge of the SI base units, determine the units for the area of a typical chemistry laboratory.

The Metric System and SI Units

Force is defined as mass times acceleration. Starting with SI base
units, derive a unit for force. Using SI prefixes, suggest a convenient unit for the force resulting from a collision with a 10-ton
trailer truck moving at 55 mi per hour and for the force resulting
from the collision of a molecule of mass around 10 - 20 kgmoving
almost at the speed of light (3 * 108 m>s) with the wall of its container. (Assume a 1-second deceleration time for both collisions.)

What SI units are used for measuring the following quanti-ties? For derived units, express your answers in terms of the six fundamental units.
(d) Volume

What type of quantity (for example, length, volume,
density) do the following units indicate? (a) m3

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Dr. B's Chemistry

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

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

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;