Particles of a suspension will settle while particles of a colloid do not. Why does this happen?

The particles in a suspension are larger than the particles in a colloid.

The particles in a suspension are smaller than the particles in a colloid.

The particles in a suspension have a higher temperature than the particles in a colloid.

The particles in a suspension have a lower temperature than the particles in a colloid.

Why is baking soda considered a pure substance but flour is not?

Baking soda is a compound and flour is a mixture.

Baking soda is an element and flour is a mixture.

Baking soda is a mixture and flour is a compound.

Baking soda is a mixture and flour is an element.

If you want to store uncooked meat to keep it from spoiling, which would keep it longer and why?

A freezer because lowering the temperature slows the chemical reactions.

A refrigerator because increasing the temperature slows the chemical reactions.

A freezer because lowering the temperature slows physical reactions.

A refrigerator because increasing the temperature slows the physical reactions.

What is a synthetic material?

Any material that is only made from natural resources

Any material that is made of recycled materials

Any material that is found in nature.

a long chain of repeating molecules

a long chain molecule with identical group of atoms

a long chain of different atoms

What is the definition of matter?

Anything that has mass and takes up space

A substance that is liquid, solid, or gas

Anything that you can see or hold

How does a solution become supersaturated?

dissolve more solute than you should be able to.

dissolve a little solute in it.

What does it mean to dilute a solution?

lower the concentration of solute per solvent

increase the concentration of solute per solvent

Water is boiled in a bottle with a balloon over the top. As the water heats, the balloon expands. What has happened to the weight of this bottle and balloon in this experiment?

It has increased as the balloon expands.

It has decreased as the water boiled away.

It is unpredictable because the balloon is flexible.

Unit 1 Chemical Reactions Review

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS1-2, MS-PS1-1, MS-PS1-3

+7

Standards-aligned

Kailyn R Tanski

Used 1+ times

FREE Resource

50 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A chemical reaction that absorbs heat.

Endothermic

Exothermic

Catalyst

Inhibitor

Tags

NGSS.HS-PS1-4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A chemical reaction that releases heat.

Exothermic

Endothermic

Catalyst

Inhibitor

Tags

NGSS.MS-PS1-4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Substances that form in a chemical reaction.

Reactants

Products

Producers

Reactions

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The original substances in a chemical reaction.

Products

Reactants

Yields

Elements

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

_____________ changes do not change the substance into something different.

Chemical

Physical

Both chemical and physical

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

______________ changes will change the substance into something with different properties.

Physical

Chemical

Both chemical and physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A force that holds atoms together.

molecules

physical bond

chemical bond

compounds

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Unit 1 Chemical Reactions Review

50 questions

A chemical reaction that absorbs heat.

A chemical reaction that releases heat.

Substances that form in a chemical reaction.

The original substances in a chemical reaction.

_____________ changes do not change the substance into something different.

______________ changes will change the substance into something with different properties.

A force that holds atoms together.

The building blocks of matter are ________________.

Look at the diagram to see if the chemical reaction shown models the Law of Conservation of Matter.

How many hydrogen atoms are found on the reactant side of the chemical equation shown?

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