Lab: Types of Reactions

Question 1

Sample Response: The reactants and products determine the type of chemical reaction. If there are more products than reactants, then it is a decomposition reaction. If there are more reactants than products, it is a synthesis reaction. If oxygen is a part of the reactant, it is a combustion reaction. If one ion replaces another, it is a single replacement reaction. If there are two compounds in a reactant where cations switch, it is a double replacement reaction. Check all information below that

Revolt · Accepted Answer

If there are more products than reactants, then it is a decomposition reaction.; If there are more reactants than products, it is a synthesis reaction.; If oxygen is a part of the reactant, it is a combustion reaction.; If one ion replaces another, it is a single replacement reaction.; If there are two compounds in a reactant where cations switch, it is a double replacement reaction.

Question 2

Question 2

Revolt · Accepted Answer

reactants; .: products; balanced chemical equation; .: classify the reaction

Question 3

In this experiment, you made observations of the ✔ reactantstype of reactiontemperature

Revolt · Accepted Answer

✔ reactants; reactants; .: products; balanced chemical equation; .: classify the reaction

Question 4

and the balanced equationconcentration✔ products .

Revolt · Accepted Answer

✔ products

Question 5

You used these observations to write the ✔ balanced chemical equationconcentrationsstates of matter

Revolt · Accepted Answer

✔ balanced chemical equation

Question 6

and ✔ classify the reactiondetermine the yield make more products.

Revolt · Accepted Answer

✔ classify the reaction

Question 7

What signs of a chemical reaction did you observe during the lab? Check all that apply.

Revolt · Accepted Answer

color change; formation of a gas; formation of a solid

Question 8

Which of the following best explains why you put KI and Pb(NO3)2 into two separate test tubes before mixing them?

Revolt · Accepted Answer

to observe both solutions before the reaction

Question 9

Which of the following best explains why you sanded the copper wire before burning it?

Revolt · Accepted Answer

to make sure that copper metal was exposed on the surface of the wire

Question 10

Explain how you know it must be oxygen. Where did the oxygen come from?

Revolt · Accepted Answer

I know it must be oxygen because the product formed is copper oxide, which consists of copper and oxygen atoms. Since copper was the starting metal, it must have reacted with oxygen from the surrounding air to form the compound.

Lab: Types of Reactions Answers

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