Basics of Chemistry Worksheet-3

Basics of Chemistry Worksheet-3

1. What measurement system is most commonly used by the scientists?

A. Scientific system                      B. English system

C. Metric system                          D. None of the above

2. What are the derived units?

A. Units that are derived from English system

B. Units that have two or more base units in it (i.e. kilogram per cubic meter)

C. Units that are derived for research

D. Units that have energy unit in it

3. How many grams are in one kilogram?

A. 10                   B. 100                 C. 1000              D. 10,000

4. What is the smallest unit of an element?

A. Atoms            B. Molecule       C. Unit                D. Singleton

5. Which of the following is not a particle in an atom?

A. Neutron        B. Magnetron   C. Proton           D. Electron

6. Where does the electron reside in an atom?

A. Revolves around the nucleus

B. In the core

C. Inside the proton

D. Inside the neutron

7. What is the physical property of  matter?

A. Properties that describe the chemical characteristics of  matter.

B. Properties that describe the physical characteristics of  matter.

C. Properties that describe the color of  matter.

D. Properties that describe the size of  matter.

8. Which of the following is not a chemical property?

A. Toxicity                                      B. Reactivity with oxygen

C. Density                                       D. Flammability

9. What will happen to the particle spacing of a matter when it is heated?

A. Particle spacing will decrease.

B. Particle spacing will increase.

C. Particle spacing will remain unchanged.

D. It may increase or decrease.

10. Heating an air balloon will make the air inside the balloon _____.

A. less dense and heavy              B. less dense and cooler

C. less dense and light                 D. more dense and heavy

Answer Key:

1.-(c); 2.-(b); 3.-(c); 4.-(a); 5.-(b); 6.-(a); 7.-(b); 8.-(c); 9.-(b); 10.-(c)