1. Chapter 11 Review
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2. 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 Jeopardy 4 Parts of Definitions
Size/structure
of atoms
Definitions
Properties
of atoms.
Parts of
atom.
Who
Discovered
it? 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 4
Jeopardy

3. 1
What is an electron?
This particle inside an atom is nearly 2000 times smaller than the protons and neutrons.
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4. 2
What are neutrons?
These are in the nucleus of an atom that are about the same size as protons.
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5. 3
What are protons?
An atom wants to maintain the same number of __________ as electrons to stay electrically balanced.
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6. This is what is between the nucleus of an atom and the electrons.4
What is NOTHING?
This is what is between the nucleus of an atom and the electrons.
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7. 1
What is an atom?
The smallest particle into which an element can be divided and still be the same substance .
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8. 2
What is an ion?
When an atom gains or loses an electron it becomes this three letter word for a charged particle.
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9. 3
What is atomic number?
The number of protons in the nucleus of an atom determines its ______ ______.
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10. 4
What are isotopes?
An atom of an element that has the same number of protons but different numbers of neutrons is called ___________.
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11. 1
What are electrons?
These are negatively charged particles in an atom.
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12. 2
What are neutrons?
These particles in the atom’s nucleus do not have any charge at all.
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13. 3
What are protons?
These are positively charged particles in the nucleus of an atom.
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14. 4 What are atomic mass units (a.m.u.’s) ?
The unit scientists came up with to measure the mass of an atom.
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15. What is the nucleus? 1
Name of number 3.
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16. What is an electron? 2
Name of number 5.
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17. What is a neutron? 3
The name of number 2.
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18. What is a proton? 4
The name of number 1.
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19. 1
Who was Democritus?
The person who was the first to believe there are such things as atoms - - things not able to be divided. He named them atomos meaning not able to be divided.
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20. 2 Who is J.J. Thomson? The person who discovered electrons.
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21. 3 What are electron clouds?
Many scientists help to discover the present model of the atom. In it electrons are not so much in shells but in electron _________ .
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22. 4
Who was Rutherford?
The person who discovered the nucleus of an atom and did the gold foil experiment.
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