- 1. Another way to think of atoms is to think of __________ blocks.
A) mixture
B) building
C) cement
D) paper
- 2. Atoms are the basis of this type of science.
A) Chemistry
B) Ecology
C) Biology
D) Physics
- 3. On the outside of an atom you will find the __________.
A) protons
B) nothing
C) electrons
D) neutrons
- 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) equal to
B) less than
C) greater than
- 6. The element Boron has 5 protons so it must have _____ neutrons.
A) 3
B) 9
C) 4
D) 5
- 7. What is an element's atomic number?
A) The number of electrons
B) Nothing important, just a random number
C) The number of protons
- 8. True or false. The atomic mass of an atom is the number of protons plus the number of neutrons.
A) True
B) False
- 9. Electrons are __________.
A) neutral
B) positive
C) negative
- 10. Protons are ___________.
A) neutral
B) negative
C) positive
- 11. Neutrons are _________.
A) neutral
B) positive
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) energy level
C) elliptical
- 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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