Chemical Equations and Reactions

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• B

• C

• D

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NGSS.MS-PS1-1

• A

• B

• C

• D

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NGSS.MS-PS1-1

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

• A

• B

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• D

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NGSS.MS-PS1-1

• A

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• D

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NGSS.MS-PS1-1

• A

• B

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• D

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NGSS.MS-PS1-1

Which of the following is a chemical reaction?

• ice melts
• water evaporates
• salt dissolves in water
• wood burns

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NGSS.MS-PS1-2

The first part of a balanced chemical equation is shown:  Cu + 2AgNO₃ → ________.  In order for this equation to be balanced, how many oxygen (O) atoms must be present in the products?

• 2
• 3
• 5
• 6

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NGSS.MS-PS1-5

Suppose the mass of two reactants totals 10 grams.  After the chemical reaction, what should be the total mass of the products?

• 0 grams
• 5 grams
• 10 grams
• 20 grams

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NGSS.MS-PS1-5

NGSS.MS-PS1-2

A balanced chemical equation is one in which:

• the number of atoms of each element is the same in both the reactants and the products.
• the same compounds are present in both the reactants and the products.
• the reactants and the products have equal densities.
•  the reactants and the products have equal volumes.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-1