NGSS.MS-PS1-1

SILVER

• Au
• Ag
• Al
• Ar

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NGSS.MS-PS1-1

What is made up two or more elements that are chemically combined?

• Element
• Mixture
• Compound
• Solids

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NGSS.MS-PS1-1

The number at the top of each square on the periodic table is the ...

• atomic number
• atomic mass
• Chemical Symbol
• Element Name

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NGSS.MS-PS1-1

____________ can join to form molecules.

• atom
• molecule
• electron

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NGSS.MS-PS1-1

Hydrogen gains stability as the H₂ molecule by forming the noble-gas configuration of ________.

• oxygen
• helium
• neon
• xenon

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NGSS.MS-PS1-1

How many protons does sulfur have?

• 32

• 16

• 48

• 12

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NGSS.MS-PS1-1

Which substance represents a compound?

• Water (H₂O)

• Carbon (C)

• Nitrogen (N)

• Sodium (Na)

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NGSS.MS-PS1-1

Substance with atoms that are all alike.

• element
• compound
• homogeneous mixture
• heterogeneous mixture

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NGSS.MS-PS1-1

How are electrons similar to neutrons?

• Both have negative charge

• Both are part of a molecule

• Both make up parts of an atom

• Both are in nucleus

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NGSS.MS-PS1-1

In which of these compounds are there twice as many oxygen atoms as hydrogen atoms?

• H₃PO₄

• H₂SO₄

• H₂O₂

• H₂O

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NGSS.MS-PS1-1