Chemical Reactions

The formation of a new substance is an example of

• a chemical reaction

• a physical change

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

An example of a chemical reaction is

• a can crushing

• paper tearing

• ice melting

• a camp fire

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NGSS.MS-PS1-2

This image shows examples of

• physical changes

• chemical reactions

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NGSS.MS-PS1-2

The number and type of atoms is the same before and after

• a chemical reaction

• both a chemical reaction and physical change

• a physical change

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

The starting materials that react with each other are called

• materials

• products

• ingredients

• reactants

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NGSS.MS-PS1-2

The materials produced by a chemical reaction are called

• ingredients

• products

• materials

• reactants

Water evaporating is

• a chemical reaction

• a physical change

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NGSS.MS-PS1-4

Total number atoms in reactants = total number atoms in products

• True

• False

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NGSS.MS-PS1-5

In this chemical reaction there are

• 3 reactants

• 2 reactants and 2 products

• 2 reactants and 1 product

• 3 products

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

The part of the equation that is circles represents

• a reactant

• a product

• React to form

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NGSS.MS-PS1-2