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- 1. Multiple Choice
Which unit is closest in size to the radius of an atom?
1 picometer
1 millimeter
1 micrometer
1 nanometer
- 2. Multiple Choice
What are the pure substances that make up all kinds of matter and are made up of atoms?
compounds
elements
electrons
protons
- 3. Multiple Choice
Which particles make up an atom?
electrons, protons
electrons, neutrons
protons, neutrons
electrons, protons, neutrons
- 4. Multiple Choice
What are subatomic particles with a positive charge called?
Protons
Neutrons
Electrons
- 5. Multiple Choice
All atoms of the same element have the same number of protons.
True
False
- 6. Multiple Choice
Trillions of atoms would fit inside the period at the end of this sentence.
True
False
- 7. Multiple Choice
Which particles constantly move around the center of an atom?
electrons
protons
neutrons
nucleus
- 8. Multiple Choice
What are the subatomic particles that do not possess any charge called?
electrons
protons
neutrons
nucleus
- 9. Multiple Choice
Which statement is true about all the atoms of a given element?
They have the same number of neutrons.
They can have a different number of protons.
They are the same size as the atoms of all other elements.
They all have the same number of protons.
- 10. Multiple Choice
The smallest particle of an element that has the element’s properties is the _______
atom
molecule
ion
nucleus
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