Quiz about Science 8: Chemistry Midterm (Review)

Question 1

Anything that has mass and takes up space.

Accepted Answer

matter

Answer

weight

Answer

properties

Answer

mass

Question 2

The amount of space something takes up.

Accepted Answer

volume

Answer

mass

Answer

density

Answer

temperature

Question 3

The amount of matter in something.

Accepted Answer

mass

Answer

weight

Answer

properties

Answer

matter

Question 4

The measure of the energy of the particles in matter.

Accepted Answer

temperature

Answer

mass

Answer

density

Answer

volume

Question 5

A substance with a definite volume, but no definite shape; this substance takes the shape of its container.

Accepted Answer

liquid

Answer

solid

Answer

gas

Question 6

A substance that does not have a definite shape or volume.

Accepted Answer

gas

Answer

solid

Answer

liquid

Question 7

Mass divided by volume.

Accepted Answer

density

Answer

mass

Answer

volume

Answer

temperature

Question 8

A substance with a definite shape and a definite volume.

Accepted Answer

solid

Answer

liquid

Answer

gas

Question 9

slicing bread

Accepted Answer

physical change

Answer

chemical change

Question 10

baking a pie

Accepted Answer

chemical change

Answer

physical change

Question 11

evaporating water

Accepted Answer

physical change

Answer

chemical change

Question 12

bicycle rusting

Accepted Answer

chemical change

Answer

physical change

Question 13

rotting strawberries

Accepted Answer

chemical change

Answer

physical change

Question 14

5 grams of orange drink is mixed with 100 grams of water. What would you expect the new solution to weigh?

Accepted Answer

105 grams

Answer

95 grams

Answer

500 grams

Question 15

What science tool would be used to measure mass?

Accepted Answer

a scale

Answer

a thermometer

Answer

a meter stick

Answer

water displacement

Question 16

What can causes ice to transform from a solid to a liquid?

Accepted Answer

Heat

Answer

Air

Answer

Cold Temperature

Answer

Shape

Question 17

Put the liquids in order from most dense to least dense?

Accepted Answer

4, 3, 2, 1

Answer

1, 2, 3, 4

Answer

3, 4, 2, 1,

Answer

4, 3, 1, 2

Question 18

An object that is thrown into water and floats has...

Accepted Answer

Less density than water

Answer

Greater density than water

Answer

Delicious flavor

Answer

Less mass

Question 19

Is burning wood a chemical or physical change?

Accepted Answer

chemical

Answer

physical

Question 20

If an object has a density of .6 g/mL and you put it into water, will it sink or float? (Density of Water = 1.0 g/mL)

Accepted Answer

float

Answer

sink

Question 21

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock? (NOTE: D=M/V)

Accepted Answer

7 g/cm3

Answer

7 mL

Answer

28 g/cm3

Answer

1/7 g/cm3

Question 22

Frank has an eraser. It has a mass of 4g, and a volume of 2cm³. What is its density? (NOTE: D=M/V)

Accepted Answer

2 g/cm3

Answer

8 g/cm3

Answer

1/2 g/cm3

Answer

24 g/cm3

Question 23

What is this?

Accepted Answer

Heterogeneous Mixture

Answer

Element

Answer

Compound

Answer

Homogeneous Mixture

Question 24

Milk

Accepted Answer

Homogeneous mixture

Answer

Heterogeneous mixture

Question 25

What is it?

Accepted Answer

Mixture

Answer

Pure Substance

Question 26

What is it?

Accepted Answer

Pure Substance

Answer

Mixture

Question 27

When there is one type of atom

Accepted Answer

Element

Answer

Compound

Answer

Homogeneous Mixture

Answer

Heterogeneous Mixture

Question 28

A ______________ is made up of different kinds of atoms chemically combined.

Accepted Answer

compound

Answer

element

Answer

mixture

Answer

molecule

Question 29

Which of these is an element?

Accepted Answer

Oxygen (O)

Answer

Salt (NaCl)

Answer

Water (H20)

Answer

Carbon Dioxide (CO2)

Question 30

The atoms along the staircase are called

Accepted Answer

metalloids

Answer

metals

Answer

nonmetals

Answer

noble gases

Question 31

The number at the top of each square on the periodic table is the ...

Accepted Answer

atomic number

Answer

atomic mass

Answer

Chemical Symbol

Answer

Element Name

Question 32

If you have a material that can conduct electricity well it is probably a...

Accepted Answer

Metal

Answer

Metalloid

Answer

Matter

Answer

Non-metal

Question 33

The pH scale is a range from:

Accepted Answer

0-14

Answer

1-7

Answer

1-5

Answer

1-20

Question 34

A(n) ______ is a substance with a pH less than 7

Accepted Answer

Acid

Answer

Alkaline

Answer

Base

Answer

Buffer

Question 35

A(n) _______ is a substance with a pH greater than 7.

Accepted Answer

Base

Answer

Acid

Answer

Buffer

Answer

Water

Question 36

An acid

Accepted Answer

is a substance that releases H+ ions when dissolved in water

Answer

is a substance that does not release any ions when dissolved in water

Answer

is a substance that releases OH- when dissolved in water

Answer

releases an equal amount of OH- and H+ ions when dissolved in water

Question 37

According to the pH range which substance is more acidic than lemon juice

Accepted Answer

Hydrochloric acid

Answer

cabbage

Answer

milk

Question 38

Which of the following is the strongest acid?

Accepted Answer

1

Answer

5

Answer

3

Answer

8

Question 39

The positive particles of an atom are

Accepted Answer

protons

Answer

electrons

Answer

positrons

Answer

neutrons

Question 40

The central region of an atom where its neutrons and protons are is its

Accepted Answer

nucleus

Answer

electron cloud

Answer

core

Answer

center

Question 41

Particles in an atom that are neutral and have no charge are

Accepted Answer

neutrons

Answer

negatrons

Answer

electrons

Answer

protons

Question 42

What does the 1.00794 stand for?

Accepted Answer

atomic mass

Answer

Hydrogen

Answer

atomic number

Answer

atomic explosion

Question 43

Mass divided by volume.

Accepted Answer

density

Answer

mass

Answer

volume

Answer

temperature

Question 44

Increased temperature means greater average energy of motion so most substances _______________ when heated.

Accepted Answer

expand

Answer

contract

Question 45

Thermal energy =

Accepted Answer

heat

Answer

cold

Question 46

During a physical change, matter always retains its

Accepted Answer

chemical makeup

Answer

state

Answer

size

Answer

shape

Question 47

100 mL of castor oil weighs 96.9g. Does castor oil float in water? (Density of water = 1.0 g/mL)

Accepted Answer

yes

Answer

no

Answer

it has neutral buoyancy

Answer

it dissolves

Question 48

Volume, density, melting point, boiling point and freezing point are all examples of _______

Accepted Answer

physical properties

Answer

pure substances

Answer

matter

Answer

chemical properties

Question 49

During a lab, you are given two substances to identify. They are white cubes of the same shape and size. Which of the following would be the best physical property to use to determine their identities

Accepted Answer

density

Answer

color

Answer

shape

Answer

taste

Question 50

Lorena placed a cup with a stick of butter in it on one side of a balance and a melted stick of butter of the same size on the other side of the balance. Which picture correctly shows what the balance would look like?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 51

Which has a pH below 7?

Accepted Answer

Acid

Answer

Base

Question 52

Which has a slippery texture?

Accepted Answer

Base

Answer

Acid

Question 53

Turns litmus red

Accepted Answer

Acids

Answer

Bases

Answer

All

Question 54

What colour does a base turn red litmus paper?

Accepted Answer

Blue

Answer

Red

Question 55

What methods can you use to measure the pH of a solution?

Accepted Answer

Using acid base-indicators or pH meters

Answer

Observing color or clarity

Answer

Measuring mass or volume

Answer

Measuring density or electrical conductivity

Question 56

Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?

Accepted Answer

slightly basic

Answer

strongly acidic

Answer

slightly acidic

Answer

strongly basic

Question 57

When dissolved in water, acids produce:

Accepted Answer

hydrogen ions

Answer

bases

Answer

salts

Answer

hydroxide ions

Question 58

What are any of the various self-contained units of matter or energy that are fundamental parts of all matter. These particles include electrons, protons, and neutrons.

Accepted Answer

subatomic particles

Answer

elements

Answer

nucleus

Answer

electron cloud

Question 59

What is the smallest unit of matter? It is composed of protons and neutrons, held together in the nucleus, and electrons around the nucleus in different electron orbitals, which form an electron cloud.

Accepted Answer

atom

Answer

cell

Answer

nucleus

Answer

electron

Question 60

What is a subatomic particle with a positive charge that is in the nucleus of an atom?

Accepted Answer

proton

Answer

neutron

Answer

electron

Answer

valence electron

Question 61

What is a subatomic particle without an electric charge, located in the nucleus of an atom?

Accepted Answer

neutron

Answer

proton

Answer

electron

Answer

valence electron

Question 62

What is a subatomic particle with a negative charge? It is found in the electron cloud surrounding the nucleus.

Accepted Answer

electron

Answer

neutron

Answer

proton

Answer

electron cloud

Question 63

What is the center of an atom containing protons and neutrons?

Accepted Answer

nucleus

Answer

neutron

Answer

proton

Answer

electron cloud

Question 64

What is the number of protons in the nucleus of an atom that determines the chemical properties of an atom?

Accepted Answer

atomic number

Answer

mass number

Answer

atomic mass

Answer

atomic symbol

Science 8: Chemistry Midterm (Review)

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