Quiz about Physical & Chemical Changes Test Review

Question 1

A copper penny turning greenish after a few years is an example of ...

Accepted Answer

Chemical Change

Answer

Physical Change

Question 2

A change in which NEW substances are formed.

Accepted Answer

Chemical change

Answer

Physical change

Answer

Casual change

Answer

Formal change

Question 3

Which of the following is NOT an example of chemical change?

Accepted Answer

breaking a pencil

Answer

sour milk

Answer

burning wood

Answer

rust

Question 4

Which of the following is NOT an example of a physical change?

Accepted Answer

sour milk

Answer

crumpled paper

Answer

pencil sharpening

Answer

shrunken clothing

Question 5

Is melting butter for popcorn a chemical or physical change?

Accepted Answer

physical

Answer

chemical

Question 6

Ripping up paper ...

Accepted Answer

Physical Change

Answer

Chemical Change

Question 7

A change in phase ...

Accepted Answer

Physical Change

Answer

Chemical Change

Question 8

Bubbles form when two or more substances are combined ...

Accepted Answer

Chemical Change

Answer

Physical Change

Question 9

An explosion occurs ...

Accepted Answer

Chemical Change

Answer

Physical Change

Question 10

Change in size ...

Accepted Answer

Physical Change

Answer

Chemical Change

Question 11

Evidence of Chemical Change.

Accepted Answer

New Substance

Answer

Size change

Answer

State change

Answer

Mixture

Question 12

Evidence of a physical change.

Accepted Answer

Shape Change

Answer

New substance

Answer

Light produced

Answer

Gas released.

Question 13

Your friend decides to toast a piece of bread, but leaves it in the toaster too long. The bread is black and the kitchen if full of smoke.

Accepted Answer

Chemical Change

Answer

Physical Change

Question 14

In baking biscuits and other quick breads, the baking powder reacts to release carbon dioxide bubbles. The carbon dioxide bubbles cause the dough to rise.

Accepted Answer

Chemical Change

Answer

Physical Change

Question 15

Chewing food to break it down into smaller particles represents a _________ change, but the changing of starch into sugars by enzymes in the digestive system represents a ___________change.

Accepted Answer

Physical then Chemical

Answer

Chemical then Physical

Answer

Both Physical

Answer

Both Chemical

Question 16

Anything that has mass and takes up space.

Accepted Answer

matter

Answer

mass

Answer

volume

Answer

melting point

Question 17

The temperature in which a substance changes from a solid to a liquid by the addition of heat.

Accepted Answer

melting point

Answer

boiling point

Answer

freezing point

Answer

temperature

Question 18

A combination of two or more substances that can be easily separated in some physical way.

Accepted Answer

mixture

Answer

solution

Answer

matter

Answer

heat energy

Question 19

properties of matter that can be observed, measured, or changed without changing the matter itself.

Accepted Answer

physical properties

Answer

density

Answer

magnetism

Answer

insulator

Question 20

When a gas changes to a liquid, it is called ________________.

Accepted Answer

condensation

Answer

melting

Answer

evaporation

Answer

freezing

Question 21

How could you turn solid metal into a liquid?

Accepted Answer

You could heat it

Answer

You could freeze it

Answer

By condensing it

Answer

You could rub it with sandpaper

Question 22

Which Law states that Matter cannot be created or destroyed during a Chemical Change/Reaction?

Accepted Answer

Conservation of Matter (Mass)

Answer

Conservation of Energy

Answer

Conservation of Momentum

Answer

Conservation of Thermodynamics

Question 23

Select ALL of the characteristics of a physical change

Accepted Answer

changes in appearance only

Accepted Answer

a new substance is not created

Accepted Answer

chemical bonds are not created or broken

Answer

burning and fire

Question 24

A heterogeneous mixture is

Accepted Answer

a mixture in which individual substances are not evenly mixed

Answer

a mixture in which multiple substances are mixed

Answer

a mixture in which the individual substances are evenly mixed

Question 25

A homogeneous mixture is

Accepted Answer

a mixture in which the individual substances are evenly mixed

Answer

a mixture in which individual substances are not evenly mixed

Answer

a mixture in which multiple substances are mixed

Question 26

Causes a change in odor ...

Accepted Answer

Chemical Reaction

Answer

Physical Reaction

Question 27

Physical properties are

Accepted Answer

properties that can be observed without changing the identity of the substance

Answer

properties that describe how a substance changes into a completely different substance

Question 28

Which is an example of a solvent?

Accepted Answer

Water

Answer

Salt

Answer

Egg whites

Answer

Sugar

Question 29

What is a solvent

Accepted Answer

A liquid that will dissolve a solid solute

Answer

Another word for solution

Answer

A thing that make drinks change colour

Answer

Usually the solid about to be dissolved

Question 30

The ___ is the thing being dissolved.

Accepted Answer

solute

Answer

solvent

Answer

mixture

Answer

solution

Question 31

The substance in which a solute is dissolved is a?

Accepted Answer

solvent

Answer

solution

Answer

alloy

Answer

mixture

Question 32

Solutions are composed of __________ .

Accepted Answer

solutes and solvents

Answer

salts and solutes

Answer

solvents and salts

Answer

solutes and alloys

Question 33

If I dissolve carbon dioxide in water, what is the solvent?

Accepted Answer

Water

Answer

Carbon Dioxide

Answer

There is no solvent

Answer

Oxygen

Question 34

Is water the only solvent that can dissolve solutes?

Accepted Answer

No

Answer

Yes

Question 35

A homogeneous mixture is the same thing as...

Accepted Answer

a solution

Answer

a heterogeneous mixture

Answer

a compound

Answer

an element

Question 36

The prefix hetero means...

Accepted Answer

different

Answer

same

Answer

together

Answer

awesome

Question 37

What does it mean to dilute a solution?

Accepted Answer

lower the concentration of solute per solvent

Answer

increase the concentration of solute per solvent

Question 38

You can make a solution more concentrated by adding __________.

Accepted Answer

solute

Answer

solvent

Answer

water

Question 39

Which of the following describes: Dissolved particles are distributed evenly and you can no longer see them.

Accepted Answer

solution

Answer

conductivity

Answer

mixture

Question 40

You can make a solution more concentrated by adding __________.

Accepted Answer

solute

Answer

solvent

Answer

water

Question 41

Describe a solute.

Accepted Answer

gets dissolved

Answer

part of solution present in largest amount

Answer

water

Answer

surrounds and breaks apart

Question 42

mixture of two or more substances; dissolved particles are spread evenly throughout the mixture

Accepted Answer

solution

Answer

solvent

Answer

solute

Answer

mixture

Question 43

Can you separate salt from water using filtration?

Accepted Answer

no

Answer

yes

Question 44

Two or more substances mingled together, but not chemically combined are known as a

Accepted Answer

mixture

Answer

compound

Answer

solution

Answer

element

Question 45

Filtration can separate a mixture because,,,

Accepted Answer

some parts of the mixture are small enough to pass through the small holes in the filter paper and some don't.

Answer

the parts of the mixture have different density so they separate.

Answer

some of the particles in the mixture are attracted to the filter paper so it stays behind.

Answer

some parts of the mixture boil faster than others so they evaporate first.

Question 46

Iron and copper screws could be separated using a magnet because

Accepted Answer

iron is magnetic, copper is not

Answer

copper is magnetic, iron is not

Answer

neither metal is magnetic

Answer

copper screws are heavier than iron and fall off the magnet

Question 47

Which of the following mixture cannot be separated by using a magnet?

Accepted Answer

a mixture of steel powder and iron powder

Answer

a mixture of iron filings and table salt

Answer

a mixture of aluminium powder and iron powder

Answer

a mixture of steel powder and sulfur

Question 48

How will you separate a mixture of metal and non metal

Accepted Answer

Magnet separation

Answer

Evaporation

Answer

Filtration

Answer

separating funnel

Question 49

Which one of the following techniques would best be used to separate soil and water?

Accepted Answer

Filtration

Answer

Decanting

Answer

distillation

Answer

Chromatography

Question 50

The separation technique that involves heating a solution until the liquid changes into a gaseous state, leaving behind a solid is known as

Accepted Answer

evaporation

Answer

sifting

Answer

floatation

Answer

chromatography

Question 51

Which one of the following methods is used to separate the colors in food dyes?

Accepted Answer

chromatography

Answer

winnowing

Answer

Threshing

Answer

Crystallization

Question 52

To separate sand and iron filings you would use a  ___________.

Accepted Answer

a magnet

Answer

a screen strainer

Answer

coffee filter paper

Answer

your hands

Question 53

A salad is an example of which?

Accepted Answer

mixture

Answer

element

Answer

compound

Answer

solution

Question 54

This is an example of a

Accepted Answer

Solution

Answer

Mixture

Question 55

Which process would you use to separate solid particles from larger particles in a mixture with filter paper in a funnel to trap solids so that the liquids will pass through.

Accepted Answer

Filtration

Answer

Chromatography

Answer

Magnetic Attraction

Answer

Floatation

Answer

Sifting

Question 56

Which process would you use to separate solids that float from the remaining solids and other items that remain in a liquid mixture. The solids float to the top on their own or when stirred, and are then skimmed off the surface of the liquid.

Accepted Answer

Floatation

Answer

Evaporation

Answer

Magnetic Attraction

Answer

Filtration

Answer

Sifting

Question 57

Which process would you use to separate smaller solid particles from larger solid particles. A mixture of different sized solids is put into a container that has a screen material at the bottom with certain sized holes in it. The smaller particles go through the screen and the larger ones do not.

Accepted Answer

Sifting

Answer

Evaporation

Answer

Magnetic Attraction

Answer

Filtration

Answer

Floatation

Question 58

Which is an example of a solution?

Accepted Answer

tea

Answer

trail mix

Answer

cereal with milk and banannas

Answer

a bag of candy

Question 59

This photo BEST describes (Select all that apply)

Accepted Answer

Solution

Accepted Answer

Homogeneous mixture

Answer

Mixture

Answer

Heterogeneous mixture

Question 60

According to the illustration, what type of substance did I create?

Accepted Answer

Solution

Answer

Mixture

Question 61

All of the following are chemical properties EXCEPT

Accepted Answer

boiling point

Answer

creating heat

Answer

forming bubbles

Answer

color change

Question 62

Bending a paper clip is an example of

Accepted Answer

Physical change

Answer

Chemical change

Question 63

Nan was studying how to separate mixtures for her upcoming science test. She decided to use a magnet to separate a group of metal items. She noticed that her magnet would not attract certain metal objects. Which object was she trying to attract but could not?

Accepted Answer

Aluminum foil

Answer

iron nails

Answer

Steel paper clips

Question 64

Julia is looking for examples of substances that will dissolve in water. She experiments with some things she finds in her kitchen at home. Which of these will NOT dissolve in water?

Accepted Answer

pepper

Answer

salt

Answer

sugar

Answer

coffee

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