H Unit 3.1 Quiz 1 - van ness - smchs

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Chemistry

Last updated 5:21 PM on 5/29/24
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10 Terms

1
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What is the most abundant element on the earth (including the crust, oceans, and atmosphere)?

oxygen

2
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The number of neutrons in 1 atom of 206/82 Pb is

124

3
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The number of neutrons in one atom of 48/22 Ti

26

4
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The mass number of an atom equals

the number of protons plus the number of neutrons per atom

5
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The number of protons in 199/80 Hg is

80

6
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How many electrons are present in a bromine atom with a mass number of 88?

35

7
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The number of protons in the nucleus of an atom is called its

atomic number

8
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The electron was discovered by

Thomson

9
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An element’s identity is based on its

atomic number

10
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An ion always contains an

unequal number of protons and electrons