Atoms Ions Isotopes

What is the mass number?

• 34

• 79

• 45

• 35

How many protons does this atom have?

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NGSS.MS-PS1-1

How many neutrons are in the following atom?

• 47

• 61

• 108

• 155

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NGSS.MS-PS1-1

How many protons are in the following atom?

• 82

• 125

• 207

• 189

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NGSS.MS-PS1-1

How many neutrons are in the isotope Carbon-14?

• 6

• 8

• 12

• 14

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NGSS.MS-PS1-1

How many electrons does the following ion have?

• 10

• 12

• 14

• 22

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NGSS.MS-PS1-1

How many electrons does the following ion have?

• 3

• 7

• 10

• 14

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NGSS.MS-PS1-1

Atoms of the same element with a different number of neutrons are called _________.

• elements

• isotopes

• ions

• neutral

Why are atoms electrically neutral?

• The neutrons balance out any charge.

• There are more neutrons than protons or electrons.

• Protons and electrons cancel each other out because they have opposite charges.

• Neutrons have no charge which makes the who atom neutral.

Which is true of the following beryllium atom?

• 4 protons and 9 neutrons

• 5 neutrons and 4 electrons

• 9 protons and 4 neutrons

• 4 protons and 2 electrons

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NGSS.MS-PS1-1