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