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chem reactions 2

Authored by Charles Ibeling

Chemistry

11th Grade

Used 7+ times

chem reactions 2
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39 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Which example provides evidence of a chemical change?

Wood releases ash and smoke when burned.

Rock particles separate when soil is being sifted.

Boiling water bubbles when being heated.

Sugar is not visible when dissolved in water.

2.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Media Image

The substances formed in a chemical reaction are known as......?

products

reactants

solutions

solutes

3.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Media Image

Which of the following is an example of a physical change that might increase or decrease the temperature, but does not involve a chemical change?

mixing paint

boiling water

recrystallization

evaporation

4.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

A precipitate is...

a solid that falls out of a liquid solution
a reactant in a reaction
a clear substance
the mass of a product

5.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

The left side of a chemical equation is known as the _______

Reactants

Products

6.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

The change of a substance into a completely new substance

catalyst

chemical change

physical change

surface area

7.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

This is the big number before substances that tell you how many of that substance there is

coefficient

subscript

reactant

product

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