Matter and Atoms Quiz Quiz

10 multiple choice questions

1. What are the three states of matter?

A) Solid and liquid B) Solid, liquid, and gas C) Liquid and gas D) Hot, cold, and warm

2. Which state of matter has a definite volume but no definite shape?

A) Solid B) Gas C) Liquid D) Plasma

3. What is the smallest unit of an element that retains its properties?

A) An atom B) A molecule C) A compound D) An electron

4. The nucleus of an atom contains:

A) Electrons only B) Protons and neutrons C) Only electrons and protons D) Only neutrons

5. What is the atomic number of an element?

A) Number of neutrons B) Total number of particles C) Number of protons D) Number of electrons plus neutrons

6. A molecule is:

A) Two or more atoms chemically bonded together B) The smallest part of an element C) A single atom D) A negatively charged particle

7. What happens during a physical change?

A) A new substance is formed B) The substance changes form but keeps its identity C) Atoms are destroyed D) Protons change number

8. Which is an example of a chemical change?

A) Ice melting to water B) Water evaporating C) Rusting of iron D) Cutting paper

9. The mass number is the total number of:

A) Protons and neutrons B) Electrons and protons C) Neutrons only D) Protons only

10. An element is defined by its number of:

A) Protons B) Neutrons C) Electrons D) Protons and neutrons

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