Law of Conservation of Mass

What is the Law of Conservation of Mass?

• Matter and energy can be created and destroyed.

• Matter and energy cannot be created or destroyed within an isolated system.

• Matter can be created, but energy cannot be destroyed.

• Energy can be destroyed, but matter cannot be created.

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NGSS.MS-PS1-5

What is the origin of all matter and energy in the universe?

• The Big Bang

• Photosynthesis

• Chemical reactions

• The Sun

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NGSS.HS-ESS1-2

What do atoms make up?

• Only living organisms

• Only non-living things

• All matter

• Only gases

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NGSS.MS-PS1-1

What is an example of a chemical reaction mentioned in the notes?

• Combustion

• Photosynthesis

• Respiration

• Evaporation

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

What do plants use to make their own food?

• Oxygen and nitrogen

• Water, carbon dioxide, and energy from the sun

• Glucose and oxygen

• Hydrogen and helium

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

In the process of photosynthesis, what is produced from water and carbon dioxide?

• Glucose and nitrogen

• Oxygen and hydrogen

• Glucose and oxygen

• Carbon monoxide and water

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

How many carbon dioxide molecules are used in the example of photosynthesis in your notes?

• 3

• 6

• 12

• 18

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NGSS.MS-LS1-6

How many water molecules are used in the example of photosynthesis given in the your notes?

• 3

• 6

• 12

• 18

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NGSS.MS-LS1-6

How many oxygen atoms are there in the rearranged molecules after photosynthesis?

• 6

• 12

• 18

• 24

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NGSS.MS-LS1-6

What is the chemical formula for glucose?

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NGSS.HS-LS2-5