Chemical Reactions Review

The products of a chemical reaction are on the

• Left side (Products → Reactants)

• Right side (Reactants → Products)

The reactants of a reaction are on the

• Left side (Reactants → Products)

• Right side (Products → Reactants)

The law of conservation of mass states that

• The mass of a system (reaction) increases from beginning to end

• The mass of a system (reaction) stays the same from beginning to end

• The mass of a system (reaction) decreases from beginning to end

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NGSS.MS-PS1-5

Is this equation balanced? 
(Are there the same amount of H and O atoms on both sides of the equation?)

   $H_2O_2\rightarrow\ H_2O\ +\ O_2$  

• Yes

• No

Tags

NGSS.MS-PS1-5

A precipitate is

• Rain

• Snow

• A solid formed in a chemical reaction

• Condensation formed in a chemical reaction

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NGSS.MS-PS1-5

NGSS.MS-PS1-2

Chemical reactions happen when

• Liquids evaporate

• Bonds break or form

• Chemicals get heated

• Bonds get stretched

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NGSS.MS-PS1-5

NGSS.MS-PS1-1

In the diagram, letter D represents a

• subscript

• coefficient

• product

• equation

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NGSS.MS-PS1-5

In the diagram, letter E represents a

• subscript

• coefficient

• product

• equation

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NGSS.HS-PS1-7

Which are the reactants in the equation shown?

• H₂O and CO₂
• O₂ and CH₄

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NGSS.MS-PS1-5

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Which is the product in the reaction shown?

• Al₂O₃

• Al

• O₂

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2