Lab: Types of Reactions

Question 1

Question 1

Revolt · Accepted Answer

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

Question 2

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

Revolt · Accepted Answer

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

Question 3

and the balanced equationconcentration✔ products .

Revolt · Accepted Answer

✔ products

Question 4

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

Revolt · Accepted Answer

✔ balanced chemical equation

Question 5

and ✔ classify the reactiondetermine the yield make more products.

Revolt · Accepted Answer

✔ classify the reaction

Question 6

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 7

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 8

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 9

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.

Question 10

A piece of wire extending through a bunsen burner flame. When you burned copper, the product copper oxide appeared on the wire. Besides copper, the other reactant is .

Revolt · Accepted Answer

oxygen, O2

Lab: Types of Reactions Answers

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