Quiz about POST-TEST PS 1-2: Matter and its Interactions

Question 1

Reactivity (bubbling, fizzing) is a --- property.

Accepted Answer

Chemical

Answer

Physical

Question 2

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

Answer

properties that we can only observe with our eyes

Answer

properties that we need special tools to observe

Question 3

Which is an example of a chemical change?

Accepted Answer

baking cake batter to make a cake

Answer

melting ice to make water

Answer

putting cheese on bread to make a cheese sandwich

Answer

cutting an orange into slices for a snack

Question 4

Burning a marshmallow over a campfire

Accepted Answer

Chemical

Answer

Physical

Question 5

______________________ can only be recognized when substances react or do not react chemically with one another.

Accepted Answer

Chemical properties

Answer

Physical properties

Answer

Flammable properties

Answer

Colorful properties

Question 6

A characteristic that can be determined without changing the chemical identity of a substance is a ________ property.

Accepted Answer

Physical

Answer

Chemical

Answer

Intensive

Answer

Material

Question 7

Which of the following is an example of a chemical property?

Accepted Answer

Ability to react with acid

Answer

Melting point

Answer

Density

Answer

Color

Question 8

What is the definition of a physical change?

Accepted Answer

Alteration in the physical state of matter without changing its chemical composition

Answer

Inherent characteristics that help us identify and describe matter

Answer

Characteristics that describe how a substance behaves under different conditions

Answer

Transformation that results in the creation of new substances

Question 9

What is the definition of chemical changes?

Accepted Answer

changes that lead to the formation of new substances with different chemical properties

Answer

characteristics that describe how a substance interacts with other substances

Answer

changes that describe how a substance behaves under different conditions

Answer

changes that alter the form or appearance of a substance, but not its chemical composition

Question 10

What happens to the fundamental particles during a physical change?

Accepted Answer

They remain the same

Answer

They break and form new chemical bonds

Answer

They become completely different substances

Answer

They disappear

Question 11

What happens to the fundamental particles during a chemical change?

Accepted Answer

They break and form new chemical bonds

Answer

They remain the same

Answer

They become completely different substances

Answer

They disappear

Question 12

Serena is mixing a material into a beaker filled with a liquid. She notices that the material seems to disappear into the liquid. What physical property of the material is Serena most likely observing?

Accepted Answer

solubility

Answer

conductivity

Answer

magnetism

Answer

density

Question 13

The Statue of Liberty is made of copper that has turned green because it has undergone a change. What can be said about this change?

Accepted Answer

The change is not a physical change because a new chemical is formed on the outside of the statue.

Answer

The change is a physical change because the copper in the statue is still there.

Answer

The change is a physical change because a new chemical is formed on the outside of the statue.

Answer

The change is a physical change because the color of the statue has changed.

Question 14

A scientist is examining an unknown solid. Which procedure would most likely help determine a chemical property of the substance?

Accepted Answer

exposing it to a flame to see if it catches on fire

Answer

heating it to find the temperature at which it melts

Answer

hitting it with a hammer to determine if it breaks or bends

Answer

placing it in water to find out whether or not it dissolves

Question 15

In a science lab, Cash mixes two clear liquids together in a beaker. Bubbles are produced, and a white solid forms and settles to the bottom. He plans to heat the beaker over low heat and make more observations.

Accepted Answer

A chemical change occurred, so even if Cash heats it, the white solid will remain.

Answer

A physical change occurred, so if Cash heats it, the white solid will dissolve to form the original mixture of clear liquids.

Answer

A physical change occurred, so even if Cash heats it, the white solid will remain.

Answer

A chemical change occurred, so if Cash heats it, the white solid will dissolve to form the original mixture of clear liquids.

Question 16

A student mixes yellow powder with water. Which observation would prove a CHEMICAL change occurred?

Accepted Answer

The bag's TEMPERATURE changed

Answer

The powder DISSOLVED in the water

Answer

The water turned the COLOR yellow

Answer

The STATE OF MATTER changed

Question 17

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

Accepted Answer

Milk turning sour

Answer

Crumpling paper

Answer

Sharpening a pencil

Answer

Clothes shrinking in the dryer

Question 18

What type of property is heat conductivity?

Accepted Answer

physical property

Answer

chemical property

Question 19

What type of change is tearing paper?

Accepted Answer

physical change

Answer

chemical change

Question 20

Which of the following is a correct description of a chemical change?

Accepted Answer

The change results in the formation of new substances.

Answer

The change only affects the appearance of a substance.

Answer

The substance remains the same.

Answer

Only the color of the substance changes.

Question 21

Which is NOT a sign of a chemical change?

Accepted Answer

Melting

Answer

Formation of bubbles

Answer

UNEXPECTED change in color

Answer

Change in odor

Question 22

What is the law of conservation of mass?

Accepted Answer

Mass remains the same before and after a reaction.

Answer

Mass is always lost in a chemical reaction.

Answer

Mass is gained after a chemical reaction.

Answer

Mass only changes if heat is added.

Question 23

In a chemical reaction, the substances that are produced are called:

Accepted Answer

Products

Answer

Reactants

Answer

Elements

Answer

Compounds

Question 24

Which of the following describes what happens to atoms during a chemical reaction?

Accepted Answer

Atoms are rearranged.

Answer

Atoms are created.

Answer

Atoms are destroyed.

Answer

Atoms are unchanged.

Question 25

The symbols on the left side of a chemical equation represent:

Accepted Answer

Reactants

Answer

Products

Answer

Coefficients

Answer

Formulas

Question 26

What is a balanced chemical equation?

Accepted Answer

When there is the same number of atoms of each element on both sides of the equation

Answer

When only reactants are on the left side

Answer

When the masses of reactants are higher than products

Answer

When there is one product and one reactant

Question 27

In a chemical reaction, what is represented by the arrow symbol?

Accepted Answer

It means 'yields' or 'produces.'

Answer

It shows that products are to the left of the arrow.

Answer

It separates elements from compounds.

Answer

It shows that mass will increase.

Question 28

Which statement is true about atoms in a chemical reaction?

Accepted Answer

Atoms are rearranged but their number stays the same.

Answer

Some atoms are destroyed during the reaction.

Answer

Atoms only change in number when a reaction is balanced.

Answer

Atoms disappear when new substances are formed.

Question 29

When water is heated and turns into steam, this is an example of:

Accepted Answer

A physical change

Answer

A chemical change

Answer

Mass conservation

Answer

A new substance forming

Question 30

How is mass affected when bonds break and reform in a chemical reaction?

Accepted Answer

Mass is conserved

Answer

Mass is created

Answer

Mass is destroyed

Answer

Mass only changes if a gas is produced

Question 31

Which best describes the concept of a 'reactant'?

Accepted Answer

A substance that undergoes a chemical reaction

Answer

A substance that is produced by a chemical reaction

Answer

A molecule that does not change during a reaction

Answer

A compound that exists only in physical changes

Question 32

Which of the following would NOT necessarily be considered evidence of a chemical change?

Accepted Answer

one or more substances change state (liquid to gas, etc)

Answer

a mixture bubbles and foams without a heat source

Answer

a mixture forms a precipitate

Answer

a mixture becomes hot without a heat source

Question 33

Which of the following is NOT a chemical property?

Accepted Answer

state of matter

Answer

photosensitivity

Answer

combustability

Answer

flammability

Question 34

_______ is a characteristic of a material that can be observed without actually changing the identity of the substance.

Accepted Answer

a physical property

Answer

a chemical property

Answer

Activation Energy

Answer

decomposition

Question 35

How many reactants are shown in the following chemical equation?

2H₃PO₄ + 3CaCO₃ --> Ca₃(PO₄)₂ + 3H₂O + 3CO₂

Accepted Answer

2

Answer

3

Answer

7

Answer

5

Question 36

A solid compound that forms and settles out of a solution during a double displacement reaction is called _______.

Accepted Answer

a precipitate

Answer

an aqueduct

Answer

a catalyst

Answer

a reactant

Question 37

Which of the following is an example of an exothermic reaction?

Accepted Answer

all of the examples given are correct

Answer

fireworks

Answer

campfires

Answer

glow sticks

Question 38

Substances that are used to help speed up a reaction (without actually becoming a part of it) are called _______.

Accepted Answer

catalysts

Answer

limiting reactants

Answer

inhibitors

Answer

precipitates

Question 39

Does this follow the law of conservation of mass:

Yes No

Accepted Answer

No

Answer

Yes

Question 40

Does this follow the law of conservation of mass:

Yes No

Accepted Answer

Yes

Answer

No

Question 41

The number in front of a compound or element is a

Accepted Answer

Coefficient

Answer

Subscript

Answer

Superscript

Answer

Charge

Question 42

Which of the following physical properties of matter describes an substance's ability to dissolve?

Accepted Answer

Solubility

Answer

Boiling Point

Answer

Viscosity

Answer

Surface Tension

Question 43

Blue color: Chemical or Physical Property

Accepted Answer

Physical Property

Answer

Chemical Property

Question 44

Flammability (burns): Chemical or Physical Property

Accepted Answer

Chemical Property

Answer

Physical Property

Question 45

Reacts with acid: Chemical or Physical Property

Accepted Answer

Chemical Property

Answer

Physical Property

Question 46

Melting point: Chemical or Physical Property

Accepted Answer

Physical Property

Answer

Chemical Property

Question 47

Reacts with water: Chemical or Physical Property

Accepted Answer

Chemical Property

Answer

Physical Property

Question 48

Boiling point: Chemical or Physical Property

Accepted Answer

Physical Property

Answer

Chemical Property

Question 49

A property that is different depending on how much of that material is present.

Accepted Answer

Extensive property

Answer

Intensive property

Answer

Chemical property

Answer

Physical property

Question 50

A property that is specific to the material, no matter how much or little of that material is tested and can be used to identify the material.

Accepted Answer

Intensive property

Answer

Extensive property

Answer

Chemical property

Answer

Physical property

Question 51

A property that, when observing the property, changes the chemical formula of the material.

Accepted Answer

Chemical property

Answer

Extensive property

Answer

Intensive property

Answer

Physical property

Question 52

Changing the way matter looks without changing it into NEW matter is a:

Accepted Answer

Physical change

Answer

Chemical change

Answer

Energy change

Answer

BOTH a chemical and a physical change

Question 53

Before mixing sugar into hot tea, a student recorded the observations

shown in the table. Which physical property of the sugar will stay the same after the

sugar is mixed with the hot tea?

Accepted Answer

Mass

Answer

Color

Answer

Texture

Answer

Shape

Question 54

In an endothermic reaction, heat is ...

Accepted Answer

taken in

Answer

given out

Question 55

In an exothermic reaction, heat is ...

Accepted Answer

given out

Answer

taken in

Question 56

Sodium bicarbonate is a __________________.

Accepted Answer

Reactant

Answer

Product

Question 57

In this model, the PRODUCTS are

Accepted Answer

PbI₂and 2KNO₃

Answer

2KI and 2KNO₃

Answer

2KI and Pb(NO₃)₂

Answer

PbI₂and 2KI

Question 58

In Elephant toothpaste, what evidence shows a chemical reaction took place?

Accepted Answer

Formation of a gas (oxygen)

Answer

Formation of a solid

Answer

Formation of carbon dioxide

Answer

Formation of a gas (nitrogen)

Question 59

In this chemical reaction,

Accepted Answer

Propane and oxygen gas yields carbo dioxide, water, and heat/light.

Answer

Propane and carbon dioxide yields water and oxygen gas.

Answer

Propane and oxygen equals carbon dioxide, water, heat and light.

Answer

Propane and water yield carbon dioxide, oxygeh, and heat.

Question 60

TRUE or FALSE:

A characteristic property of matter remains the same regardless of the sample size, making it an intensive property

Accepted Answer

TRUE

Answer

FALSE

POST-TEST PS 1-2: Matter and its Interactions

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