Counting Atoms

What does the subscript in a chemical formula tell you? (a)  

• How many molecules are present
• How many atoms are present
• How many elements are present
• How many neutrons are present

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NGSS.MS-PS1-1

• 1

• 2

• 3

• 4

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• 6

• 1

• 12

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• Iron, Oxygen

• Francium, Europium, Oxygen

• Ferrium, Oxygen

• Berylium, Oxygen

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• 2

• 4

• 3

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• Element

• Compound

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Which chemical formula correctly displays 1 atom of nickel and 2 atoms of Fluorine?

• niF2

• NIF₂

• Ni₁F₂

• NiF₂

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NGSS.MS-PS1-1

• 18

• 12

• 25

• 24

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NGSS.MS-PS1-1

• Silver

• Gold

• Nitrogen

• Oxygen

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NGSS.MS-PS1-1

Molecules that are made of more than one type of atom are called?

• Molecules

• Elements

• Mixtures

• Compounds

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NGSS.MS-PS1-1