- 1. Another way to think of atoms is to think of __________ blocks.
A) mixture
B) cement
C) paper
D) building
- 2. Atoms are the basis of this type of science.
A) Physics
B) Ecology
C) Chemistry
D) Biology
- 3. On the outside of an atom you will find the __________.
A) nothing
B) protons
C) neutrons
D) electrons
- 4. True or false. On the inside of an atom you will find protons and neutrons.
A) True
B) False
- 5. The number of protons in an atom is ___________ the number of neutrons.
A) less than
B) equal to
C) greater than
- 6. The element Boron has 5 protons so it must have _____ neutrons.
A) 9
B) 3
C) 5
D) 4
- 7. What is an element's atomic number?
A) The number of electrons
B) The number of protons
C) Nothing important, just a random number
- 8. True or false. The atomic mass of an atom is the number of protons plus the number of neutrons.
A) False
B) True
- 9. Electrons are __________.
A) neutral
B) positive
C) negative
- 10. Protons are ___________.
A) positive
B) neutral
C) negative
- 11. Neutrons are _________.
A) positive
B) neutral
C) negative
- 12. True or false. Electrons have much larger mass than protons.
A) True
B) False
- 13. True or false. Electrons orbit the outside of an atom in an elliptical shape, it looks like an oval shape.
A) True
B) False
- 14. The shell of an atom is sometimes called an ______________.
A) egg surface
B) elliptical
C) energy level
- 15. True or false. We can always identify exactly where an electron is when it is orbiting an atom.
A) True
B) False
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