Chemical formulas 8.5D

How many atoms of oxygen are in a molecule of glucose (C₆H₁₂O₆)?

• 4

• 6

• 12

• 24

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NGSS.MS-PS1-1

How many atoms in all are found in the compound above?

• 3

• 4

• 5

• 6

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NGSS.MS-PS1-1

Which of the models best represents CaCO₃?

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NGSS.MS-PS1-1

How many elements are in C₆H₁₂O₆?

• 1

• 2

• 3

• 4

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NGSS.MS-PS1-1

What combination of beads should the use to model the formula? Blue represents carbon, green represent oxygen and red represent hydrogen.

• 6 blue, 6 red and 6 green

• 12 green, 6 red and 6 blue

• 12 red, 6 blue and 6 green

• 12 blue, 6 green and 6 red

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NGSS.MS-PS1-1

NGSS.MS-PS1-5

In a chemical formula, what is used to indicate the number of atoms of each element?

• Atomic number

• Subscript

• Coefficient

• Atomic mass number

A water molecule is made up of two hydrogen (H) atoms and one oxygen (O) atom. In a chemical equation, what would be the correct way to represent six water molecules?

• 6H2O

• 6HO2

• 2H6O6

• 12H6O

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NGSS.MS-PS1-1

2Li₂BrO₃

How many elements are in this chemical formula?

• 2

• 3

• 9

• 7

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NGSS.MS-PS1-1

2Li₂BrO₃

_{How many atoms are in this chemical formula above?}

• 12

• 2

• 7

• 10

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NGSS.MS-PS1-1

2Ca(CO₃)₂

_{How many atoms of Carbon are there in the chemical formula above?}

• 4

• 2

• 3

• 6

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NGSS.MS-PS1-1