Basic Concepts of Matter

1. Matter is defined as anything that:

A) Has energy and force
B) Has mass and occupies space
C) Produces light
D) Has only volume
Answer: B

2. Which of the following is NOT considered matter?

A) Air
B) Water
C) Heat
D) Wood
Answer: C

3. The tendency of a body to resist any change in its state of rest or motion is called:

A) Density
B) Inertia
C) Volume
D) Pressure
Answer: B

4. Which property of matter depends on the amount of substance present?

A) Temperature
B) Density
C) Mass
D) Color
Answer: C

5. The space occupied by a substance is called:

A) Mass
B) Density
C) Volume
D) Area
Answer: C

6. The smallest unit of an element that retains its chemical properties is:

A) Molecule
B) Ion
C) Atom
D) Compound
Answer: C

7. Which of the following particles carries a positive charge?

A) Electron
B) Proton
C) Neutron
D) Atom
Answer: B

8. A molecule is best defined as:

A) A charged particle
B) The smallest unit of a compound or element that can exist independently
C) A subatomic particle
D) A mixture of elements
Answer: B

9. Which statement is TRUE about particles of matter?

A) They are stationary
B) They have no space between them
C) They are in constant motion
D) They do not attract each other
Answer: C

10. An ion is formed when an atom:

A) Splits into two atoms
B) Gains or loses electrons
C) Combines with another atom
D) Changes its mass
Answer: B

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