Quiz about Chemistry Midterm Review

Question 1

Energy in the sun is produced as a result of nuclear ____ reactions.

Accepted Answer

fusion

Answer

fission

Answer

waste

Answer

sub

Question 2

The three types of nuclear radiation in order of increasing penetrating power are

Accepted Answer

alpha, beta, gamma

Answer

alpha, gamma, beta

Answer

beta, alpha, gamma

Answer

gamma, alpha, beta

Question 3

What is nuclear fission?

Accepted Answer

Big nucleus splits to small nuclei

Answer

Small nuclei fuse into a bigger nucleus

Answer

Stars

Answer

Making compounds

Question 4

What is an alpha particle equivalent to?

Accepted Answer

A helium nucleus

Answer

A beta particle

Answer

An electron

Answer

An energy ray/wave

Question 5

Has the symbol

Accepted Answer

Gamma

Answer

Alpha

Answer

Beta

Question 6

Which type of radioactive decay is occurring in this equation?

Accepted Answer

beta decay

Answer

Alpha decay

Answer

gamma decay

Answer

positron emission

Question 7

What is the major drawback to fission power?

Accepted Answer

Radioactive Waste

Answer

CO₂ Emissions

Answer

SO₂ Emissions

Answer

All of the Above

Question 8

What is NOT a benefit of a fission reactor?

Accepted Answer

Produces carbon dioxide and other greenhouse gasses

Answer

Conserves Energy

Answer

Supplies plentiful energy

Answer

Eliminates a megaton of sulfur oxides

Question 9

Is this equation balanced?

Accepted Answer

no

Answer

yes

Answer

Not enough information

Question 10

Balance this equation
_Al +_HCl --> _H₂+_AlCl₃

Accepted Answer

2, 6, 3, 2

Answer

it is already balanced

Answer

4, 12, 3, 4

Answer

2, 1, 4, 5

Question 11

Balance this equation.
_CH₄ + _O₂--> _CO₂+ _H₂O

Accepted Answer

1,2,1,2

Answer

1,2,1,1

Answer

2,1,2,1

Answer

0,2,0,2

Question 12

A student mixes vegetable oil and water in a beaker. Once the mixture settles, she notes that the oil is at the top, and the water is at the bottom. What does she know about the density of the oil?

Accepted Answer

It is less than the density of the water.

Answer

It is greater than the density of the water.

Answer

It is the same as the density of the water.

Question 13

Two different-sized objects are placed on a two-pan balance. If the balance is level, the objects have the same

Accepted Answer

mass

Answer

volume

Answer

density

Answer

color

Question 14

Of the three liquids shown in the picture, which has the highest density?

Accepted Answer

The red one

Answer

The yellow one

Answer

The blue one

Question 15

True or false: Two objects that are the same size can have different masses.

Accepted Answer

True

Answer

False

Question 16

25 mL of a mystery liquid has a mass of 37.5 grams. What is the density of the liquid?

Accepted Answer

1.5 g/mL

Answer

937.5 g/mL

Answer

0.67 g/mL

Answer

62.5 g/mL

Question 17

A student mixes 25 grams of vinegar with 10 grams of baking soda in an open beaker. What might the student measure as the mass in the beaker once the reaction is complete?

Accepted Answer

34 grams

Answer

35 grams

Answer

36 grams

Question 18

The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?

Accepted Answer

9

Answer

3

Answer

7

Answer

5

Question 19

pH less than 7.

Accepted Answer

Acids

Answer

Bases

Answer

All

Question 20

Which of the following statements is correct?

Accepted Answer

Red litmus paper turns blue when placed in a base.

Answer

Blue litmus paper turns red when placed in a base.

Answer

Blue litmus paper stays blue when placed in an acid.

Answer

Red litmus paper stays red when placed in a base.

Question 21

This is the result of two or more substances being physically combined.

Accepted Answer

mixture

Answer

molecule

Answer

compound

Answer

chemical

Question 22

This is the part of a solution present in the greatest amount. It is usually what does the dissolving. There is only one of these in every solution.

Accepted Answer

solvent

Answer

solution

Answer

solute

Answer

salute

Question 23

Which of the following are factors that affect the rate of dissolving? (choose all that apply!)

Accepted Answer

stirring

Accepted Answer

heating

Accepted Answer

particle size

Answer

time of day

Answer

Fortnite Tier

Question 24

When dissolving marshmallows in your hot chocolate, which of the following would dissolve the fastest?

Accepted Answer

a handful of mini marshmallows with a total mass of 10 grams, since smaller particles dissolve faster because they have greater surface area

Answer

a large marshmallow with a total mass of 10 grams, since larger particles dissolve faster because they have less surface area

Question 25

Which is a halogen?

Accepted Answer

Fluorine

Answer

Carbon

Answer

Helium

Answer

Lithium

Question 26

Which is an alkaline earth metal?

Accepted Answer

Calcium

Answer

Rubidium

Answer

Carbon

Answer

Iodine

Question 27

Which element is in group 4 period 6?

Accepted Answer

Hafnium (Hf)

Answer

Helium

Answer

Chromium (Cr)

Answer

Barium

Question 28

Sodium (Na)

Accepted Answer

alkali metal

Answer

alkaline earth metal

Answer

halogen

Answer

noble gas

Question 29

Question 29.

Accepted Answer

Alkaline Earth

Answer

Alkali

Answer

Halogen

Answer

Noble Gases

Question 30

Question 30.

Accepted Answer

Transition Metals

Answer

Inner Transition Metals

Answer

Metals

Answer

Metalloids

Question 31

What do atoms that form positive ions tend to do?

Accepted Answer

Tend to lose electrons

Answer

Tend to lose protons

Answer

Tend to gain electrons

Answer

Tend to gain protons

Question 32

What usually forms the positive ion?

Accepted Answer

Metal

Answer

Non Metals

Answer

None

Question 33

What usually forms the negative ion?

Accepted Answer

nonmetals

Answer

metal

Answer

none

Question 34

Covalent compounds

Accepted Answer

Share electrons

Answer

transfer electrons

Answer

contain a sea of electrons

Answer

conduct electricity

Question 35

What is a valence electron?

Accepted Answer

an electron that is found in the outermost shell of an atom.

Answer

an electron found in the innermost shell of an atom.

Answer

an electron found in the middle shell.

Question 36

How many valence electrons in this structure?

Accepted Answer

7

Answer

6

Answer

5

Answer

4

Question 37

The atomic number tells you what?

Accepted Answer

number of protons

Answer

number of electrons

Answer

number of neutrons

Answer

both electrons and protons in an atom.

Question 38

Elements which are shiny, conduct electricity and heat are called

Accepted Answer

metal

Answer

nonmetal

Answer

metalloid

Answer

nonexistent

Question 39

The atoms along the staircase are called

Accepted Answer

metalloids

Answer

metals

Answer

nonmetals

Answer

noble gases

Question 40

What is the atomic mass equal to?

Accepted Answer

the number of protons and neutrons

Answer

the number of protons

Answer

the number of neutrons

Answer

the number of protons and electrons

Question 41

How does heat flow?

Accepted Answer

Always from warm to cold

Answer

Always from cold to warm

Answer

Both warm to cold & cold to warm

Answer

It depends on the temperature

Question 42

When Pressure increases then the Volume must...

Accepted Answer

decrease

Answer

Increase

Question 43

Volume and temperature have a ______ proportionality.

Accepted Answer

direct

Answer

inverse

Answer

linear

Answer

exponential

Question 44

At constant volume, what happens to temperature of a gas when the pressure doubles?

Accepted Answer

The temperature also doubles.

Answer

The temperature decreases to half its original volume.

Answer

The temperature doesn't change.

Answer

The temperature quadruples.

Chemistry Midterm Review

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