Chemical Reactions

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Back

photosynthesis

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

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Back

respiration

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NGSS.MS-PS1-5

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Back

corrosion

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Which of the following substances is considered non-flammable?

Hydrogen gas

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Paraffin wax

,

Fibreglass

,

Petrol

Back

Fibreglass

Front

Which substance is highly flammable and used to power rockets because it is highly explosive? Options: Hydrogen gas, Paraffin wax, Fibreglass, Petrol

Back

Hydrogen gas

Front

What is the name of the chemical that makes leaves green, and captures sunlight to start photosynthesis in plants?

Back

chlorophyll

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Front

A starting substance in a chemical reaction is known as a ...?

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reactant

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Example of a physical change causing a permanent colour change without a chemical change:

boiling water

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evaporation

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mixing paint

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recrystallization

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mixing paint

Front

The substances formed in a chemical reaction are known as......?

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products

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Example of a physical change that might change temperature but not involve a chemical change: mixing paint, boiling water, recrystallization, evaporation.

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evaporation

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NGSS.MS-PS3-4

NGSS.MS-PS3-5