Unit 1: Atoms & PT

How many protons are in this element?

• 79

• 196

• 117

• Cannot be determined

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NGSS.MS-PS1-1

The majority of an atom's mass exists where?

• In the nucleus

• In the electron cloud

• In the space between the nucleus and the electrons

• In the neutrons

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NGSS.HS-PS1-8

How many electrons does potassium K contain? (click to see image)

• 19

• 39

• 20

• 40

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NGSS.HS-PS1-1

What is the atomic mass of Neon?

• 10

• 20.18

• 10.18

• 20.18

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NGSS.HS-PS1-1

How many neutrons are in a Gold atom?

• 79

• 196

• 118

• 275

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NGSS.MS-PS1-1

How many electrons does a Copper atom have?

• 63

• 29

• 92

• 34

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NGSS.HS-PS1-1

Which of the following is a pure substance?

• salt water

• sodium chloride

• blood

• lemonade

What is formed when 2 or more different elements chemically combine?

• atom

• compound

• homogeneous mixture

• heterogeneous mixture

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NGSS.MS-PS1-1

Which of the following is a homogeneous mixture?

• vegetable soup

• chicken noodle soup

• salt water

• copper

Two atoms of the element hydrogen are chemically bonded together. The two particle compose what?

• an atom

• a compound

• a mixture

• a molecule

Tags

NGSS.MS-PS1-1