NGSS.MS-PS1-1

CaCO₃ represents a chemical

• Symbol
• Formula
• Subscript
• Reaction

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NGSS.MS-PS1-1

Classify the picture with the correct label.

• Element
• Compound
• Mixture of Elements and Compounds
• Mixture of Elements

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NGSS.MS-PS1-1

Which substances have the same number of carbon atoms?

• 1 and 2
• 2, 3, and 4
• 2 and 3
• 1 and 3

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NGSS.MS-PS1-1

How many electrons does Beryllium (Be) have?

• 4
• 2
• 9
• 5

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NGSS.MS-PS1-1

What is a  pure substance made of two or more elements chemically combined in a set ratio. Ex: CO2 has a set ratio of 1:2, meaning for every one carbon atom there are two oxygen atoms.

• element
• compound
• mixture
• salad

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NGSS.MS-PS1-1

Whether or not bonds form is due to the ?????

• valence electron configurations
• protons
• atomic mass
• chance

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NGSS.MS-PS1-1

Two or more atoms chemically bonded together are called a

• atom
• element
• molecule
• mixture

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NGSS.MS-PS1-1

What is the atomic number?

• 8

• 15.999

• 16

• ?

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NGSS.MS-PS1-1

This is where electrons hang out--it goes around the nucleus of an atom.

• electron cloud

• Apple Icloud

• cumulus

• stratus

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NGSS.MS-PS1-1

Atoms combine to make _____________.

Answer explanation

When atoms "stick" together in a molecule we call it a BOND

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NGSS.MS-PS1-1