Quiz about Chemistry Unit 2 Test

Question 1

Carbon dioxide goes from a solid to a gas without becoming a liquid. This is a (chemical/ physical) change.

Accepted Answer

physical

Answer

chemical

Question 2

Shape is a (chemical/ physical) property.

Accepted Answer

physical

Answer

chemical

Question 3

Bleach is an example of a (base/ acid).

Accepted Answer

base

Answer

acid

Question 4

When substances react, their mass remains the (same/ different) after the reaction.

Accepted Answer

same

Answer

different

Question 5

In a physical change, the substance (does/ does not) change its identity.

Accepted Answer

does not

Answer

does

Question 6

A description of an object based on what you observe with your senses includes (physical/ chemical) properties.

Accepted Answer

physical

Answer

chemical

Question 7

The ability to react with oxygen is a (physical/ chemical) property.

Accepted Answer

chemical

Answer

physical

Question 8

(Mass/ Weight) is due to gravitational pull.

Accepted Answer

Weight

Answer

Mass

Question 9

The ability for a substance to dissolve in another is (solubility/ flammability).

Accepted Answer

solubility

Answer

flammability

Question 10

(Acids/ Bases) are associated with the number greater than 7 on the pH scale.

Accepted Answer

Bases

Answer

Acids

Question 11

Directions: Write the symbol of the element or the name of the element in the space provided.

Magnesium:

Accepted Answer

Mg

Answer

Mn

Answer

Br

Answer

Ox

Question 12

Directions: Write the symbol of the element or the name of the element in the space provided.

N:

Accepted Answer

Nitrogen

Answer

Nickel

Answer

Neon

Answer

Carbon

Question 13

Directions: Write the symbol of the element or the name of the element in the space provided.

Helium:

Accepted Answer

He

Answer

H

Answer

Hu

Answer

Pb

Question 14

Directions: Write the symbol of the element or the name of the element in the space provided.

Co:

Accepted Answer

Cobalt

Answer

Carbon

Answer

Copper

Answer

Calcium

Question 15

Directions: Write the symbol of the element or the name of the element in the space provided.

Nickel:

Accepted Answer

Ni

Answer

Fe

Answer

Zn

Answer

O

Question 16

Directions: Write the symbol of the element or the name of the element in the space provided.

Au:

Accepted Answer

Gold

Answer

Iodine

Answer

Fluorine

Answer

Neon

Question 17

Directions: Write the symbol of the element or the name of the element in the space provided.

Rb

Accepted Answer

Rubidium

Answer

Bismuth

Answer

Mercury

Answer

Neon

Question 18

Directions: Write the symbol of the element or the name of the element in the space provided.

Bromine:

Accepted Answer

Br

Answer

Ox

Answer

I

Answer

F

Question 19

Directions: Write the symbol of the element or the name of the element in the space provided.

Hg:

Accepted Answer

Mercury

Answer

Helium

Answer

Rubidium

Answer

Magnesium

Question 20

Directions: Write the symbol of the element or the name of the element in the space provided.

Oxygen:

Accepted Answer

O

Answer

Fe

Answer

H

Answer

F

Question 21

Directions: Write the symbol of the element or the name of the element in the space provided.

Ca:

Accepted Answer

Calcium

Answer

Carbon

Answer

Cobalt

Answer

Copper

Question 22

Directions: Write the symbol of the element or the name of the element in the space provided.

Iron:

Accepted Answer

Fe

Answer

F

Answer

He

Answer

Pb

Question 23

The following are examples of physical properties EXCEPT :

Accepted Answer

Ability to react with oxygen

Answer

Density

Answer

Shape

Answer

Color

Question 24

Which formula listed below correctly finds density:

Accepted Answer

D= m/V

Answer

D= g/V3

Answer

D=V/m

Answer

D= g3/V

Question 25

A bicycle was left outside for several days. What most likely happened to the bicycle?

Accepted Answer

Chemical changes colored it reddish-brown

Answer

Physical changes colored it green

Answer

Physical changes made it shiny

Answer

No changes occurred

Question 26

Which of the following is the law that states that matter cannot be created or destroyed?

Accepted Answer

The Law of Conservation of Mass

Answer

The Law of Conservation of Density

Answer

The Law of Gravity

Answer

The Law of Motion

Question 27

An example of a chemical change is ___

Accepted Answer

Baking bread

Answer

A magnet sticking to a fridge

Answer

Breaking glass

Answer

Water boiling

Question 28

The temperature at which a liquid becomes a gas is the ___ point.

Accepted Answer

Boiling

Answer

Freezing

Answer

Melting

Answer

Condensation

Question 29

The amount of matter in an object is called the

Accepted Answer

Mass

Answer

Weight

Answer

Volume

Answer

Precipitate

Question 30

Using the picture, which liquid has the highest density?

Accepted Answer

Liquid D

Answer

Liquid A

Answer

Liquid B

Answer

Liquid C

Question 31

Using the picture, which what must be true about Liquid A when compared to liquid C?

Accepted Answer

Liquid C is denser than Liquid A

Answer

Liquid A is denser than Liquid C

Answer

Liquid C is less dense than Liquid A

Answer

They have the same density

Question 32

The mass of the products of a chemical reaction ____ the mass of the reactants

Accepted Answer

is the same as

Answer

is greater than

Answer

is less than

Answer

none of the above

Question 33

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

Accepted Answer

Lighting a match

Answer

Freezing water

Answer

Breaking a glass

Answer

Dissolving salt into water

Question 34

Which of the following is an example of a physical change?

Accepted Answer

Slicing bread

Answer

Rusting chairs

Answer

Burning fire

Answer

Exploding fireworks

Question 35

In an experiment, a student adds baking soda (sodium bicarbonate) to vinegar (acetic acid) and observes a large amount of gaseous carbon dioxide is released. What is the scientific reason for this change?

Accepted Answer

Baking soda chemically changes into a new substance

Answer

Baking soda evaporates

Answer

Baking soda condenses

Answer

Baking soda's atoms are destroyed

Question 36

Which of these observations is an indication that a chemical reaction has occurred?

Accepted Answer

Sugar crystals form on the sides of a boiling pot of sugar water

Answer

Steam forms above boiling water

Answer

A solid forms when a clear solution is frozen

Answer

A solid forms when two clear solutions are mixed

Question 37

What are the reactants?

Accepted Answer

35g Cl₂ + 15g 2KI

Answer

25 g KCL + __ g I₂

Question 38

What are the products?

Accepted Answer

25 g KCL + __ g I₂

Answer

35g Cl₂ + 15g 2KI

Question 39

Which product is an element?

Accepted Answer

I2

Answer

KCl

Question 40

Which product is a compound?

Accepted Answer

KCl

Answer

I2

Question 41

How many grams of iodine is produced?

Accepted Answer

25

Answer

10

Answer

15

Answer

30

Chemistry Unit 2 Test

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