Atoms & Molecules

Atoms & Molecules

4pA, 4pB

Multiple Choice

1. The particles in an atom that are neutral and have no charge are...

• negatrons

• neutrons

• electrons

• protons

Multiple Choice

2. The central region of an atom where its neutrons and protons are is its...

• electron cloud

• nucleus

• core

• center

Multiple Choice

3. The positive particles of an atom are...

• nucleus

• orbit

• electrons

• protons

Multiple Choice

4. The smallest unit of matter is...

• nucleus

• atomos

• atom

• orbit

Multiple Choice

5. Electrons have what type of charge?

• positive

• negative

• neutral

• zero

Multiple Choice

6. A particle that moves around the nucleus is a

• proton

• electron

• orbit

• quark

Multiple Choice

7.What does the nucleus consist of?

• Protons + Electrons

• Protons + Neutrons

• quark

• Neutrons + Electrons

Multiple Choice

8. Which of these choices is not a major part of an atom?

• electrons

• protons

• neutrons

• All are parts of an atom

Multiple Choice

9. A desk, the air, and even people are made up of billions and billions of ______?

• molecules

• atoms

• nucleus

• quark

Multiple Choice

10. It is the center of an atom and it is made up of protons and neutrons

• atom

• molecule

• nucleus

• proton

Multiple Choice

11. What is it called when two atoms of the same element join together?

• molecule

• matter

• solid

• liquid

Multiple Choice

12. What is the common name for the compound H2O?

• ice

• water

• oxygen

• helium

Multiple Choice

13. How many hydrogen atoms are in the compound H2O?

• four

• three

• two

• one

Multiple Choice

14. Which part of an atom has a negative charge?

• electron

• neutron

• proton

• nucleus

Multiple Choice

15. Which part of an atom has a positive charge?

• proton

• electron

• orbit

• nucleus