Chemical Reactions Review

In the equation shown, what are the product(s)?

• N₂ + H₂

• NH₃

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NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In the equation shown, what are the reactant(s)?

• N₂ + H₂

• NH₃

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is this equation balanced?

• Yes

• No

Tags

NGSS.MS-PS1-5

Is this equation balanced?

• Yes

• No

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is this equation balanced?

• Yes

• No

Tags

NGSS.MS-PS1-5

Which of the following is a chemical reaction?

• Sodium and chlorine atoms bond to form salt molecules.

• Ice melts to form water.

• Carbon dioxide freezes to form dry ice.

• Salt and water mix to form salt water.

Tags

NGSS.MS-PS1-2

What does the Law of Conservation of Mass say? It says,

"During a chemical reaction, mass is neither _______ or destroyed."

• burned

• created

• melted

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NGSS.MS-PS1-5

So, the Law of Conservation of Mass would tell us that the mass of all the REACTANTS must __________ the mass of all PRODUCTS in a chemical reaction.

• equal

• be greater than

• be less than

Tags

NGSS.MS-PS1-5

How many oxygens are in Al₂(SO₄)₃?

• 4
• 12
• 7
• 24

Tags

NGSS.MS-PS1-1

Which of the following is NOT an indication of a chemical reaction?

• new gas formed

• temperature change

• new smell detected

• two liquids form a mixture

Tags

NGSS.MS-PS1-2