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Chemistry of matter

Total questions: 64

Worksheet time: 32mins

Name
Class
Date
1.

The graph below shows the solubility of two different chemical compounds. Compared to copper sulfate, approximately how many more grams of potassium bromide would dissolve at 90°C?

a)

20

b)

40

c)

60

d)

80

2.

1.

Based

on the information in the table, which of the four substances below is a

compound?

a)

Se

b)

Fe

c)

CO

d)

He

3.

Which term is not a form of matter?

a)

element

b)

compound

c)

energy

d)

atom

4.

Water vapor changes to liquid water during which process?

a)

condensation

b)

evaporation

c)

vaporization

d)

melting

5.

Atoms are made of particles. These include:

a)

protons only

b)

protons and electrons only

c)

protons and neutrons only

d)

protons, neutrons, and electrons

6.

Which of the following is true?

a)

proton, neutral

b)

electron, negative

c)

neutron, negative

d)

electron, positive

7.

Which of the following describes an atom which is neutral?

a)

5 protons, 12 neutrons, and 12 electrons

b)

8 protons, 9 neutrons, and 8 electrons

c)

7 protons, 7 neutrons, and 8 electrons

d)

11 protons, 12 neutrons, and 6 electrons

8.

Elements are arranged on the Periodic Table according to

a)

density

b)

phase of matter

c)

number of protons

d)

abundance on Earth

9.

Which set of terms describes a non-metal?

a)

shiny, malleable, good conductor

b)

dull, brittle, poor conductor

c)

dull, malleable, poor conductor

d)

shiny, brittle, poor conductor

10.

Which group of elements will not react with other elements?

a)

metals

b)

metalloids

c)

non-metals

d)

noble gases

11.

Which term describes a chemical characteristic of matter?

a)

temperature

b)

density

c)

reactivity

d)

mass

12.

Which activity best demonstrates that air takes up space?

a)

blowing out a candle

b)

flying a kite

c)

seeing your breath on a cold day

d)

inflating a balloon

13.

The particles that make up a solid

a)

can move easily

b)

are closely packed together

c)

can flow against each other

d)

are spread far apart

14.

A phase change occurs because

a)

heat energy is absorbed or released

b)

elements in the compound are re-arranged

c)

two different compounds react

d)

elements are physically combined

15.

The cooling of air will cause water vapor in the air to change to liquid rain drops. This change is called

a)

vaporization

b)

evaporation

c)

condensation

d)

sublimation

16.

Particles of a gas will do all of the following except

a)

become arranged in a regular geometric pattern

b)

spread out to fill the entire container

c)

take on the shape of the container they are in

d)

constantly change position

17.

The following equation, H2O (L) + heat H2O (g), describes a

a)

physical change

b)

mixture

c)

chemical change

d)

solution

18.

The following equation, N2 + 3 H2 2 NH3 describes a

a)

physical change

b)

mixture

c)

chemical change

d)

element

19.

Which describes a physical change followed by a chemical change?

a)

cutting wood then painting it green

b)

taking ice cream out of the freezer then letting it melt

c)

putting gasoline in the car then starting the engine

d)

crushing a sugar cube then dissolving it in water

20.

A sample of unknown composition was tested in a laboratory. The sample could not be broken down by physical or chemical means into simpler substances. On the basis of this research, the laboratory reported that this sample was most likely a(n):

a)

compound

b)

element

c)

mixture

d)

solution

21.

The compound calcium carbonate, commonly known as chalk, has the chemical formula of CaCO3. How many different elements are in chalk?

a)

one

b)

two

c)

three

d)

five

22.

In the formula for glucose, C6H1206, how many atoms of hydrogen are indicated?

a)

one

b)

six

c)

twelve

d)

twenty-four

23.

Which of the following will cause a lump of sugar to dissolve faster?

a)

chopping it into pieces

b)

adding more sugar

c)

stop stirring the water

d)

adding cold water

24.

Which model is used by scientists to determine the properties of elements?

a)

a Punnett square

b)

the Periodic Table

c)

a pedigree chart

d)

the rock cycle

25.

Hydrochloric acid is added to a beaker containing a piece of zinc. As a result, zinc chloride is formed and hydrogen gas is released. This is an example of

a)

a chemical reaction

b)

a physical change

c)

photosynthesis

d)

evaporation

26.

Which of these substances are elements?

a)

hydrochloric acid and carbonic acid

b)

carbon dioxide and water

c)

oxygen and helium

d)

water and oxygen

27.

A mixture of salt, sand, and water is thoroughly stirred. It is then filtered through a filter paper as shown in the diagram below. Which substance(s) pass through the filter?

a)

salt and sand

b)

sand and water

c)

water and salt

d)

water only

28.

Which of the following processes can separate dissolved salt from water?

a)

filtration

b)

evaporation

c)

stirring

d)

sedimentation

29.

Which combination of zinc and hydrochloric acid would react the fastest?

a)

a zinc strip and hydrochloric acid at 20 0C

b)

zinc powder and hydrochloric acid at 20 0C

c)

a zinc strip and hydrochloric acid at 10 0C

d)

zinc powder and hydrochloric acid at 10 0C

30.

The elements fluorine, chlorine, bromine, and iodine are all found in the same group (17) on the table. These elements are grouped together because they

a)

are metals

b)

have the same atomic mass

c)

react in similar ways

d)

are noble gases

31.

Water (H2O) is not found on the Periodic Table of the Elements because water is

a)

an atom

b)

a mixture

c)

a liquid

d)

a compound

32.

A student writes the following observations about aluminum in his notebook: It is shiny and reflects light. It conducts electricity and heat. It will bend. It will not rust. It will melt at 661 degrees C. Which is are chemical physical properties only

a)

It is shiny and reflects light.

b)

It conducts electricity and heat.

c)

It will bend.

d)

It will not rust.

e)

It will melt at 661 degrees C

33.

A student mistakenly dumped iron filings and sand into a beaker of salt that the teacher needed for a salt water fish tank. Check all that needs to be done to separate all the substances back to original.

a)

use a magnet to separate iron filings

b)

evaporate the water to separate the water from the salt

c)

filter salt from water using a coffee filter

d)

filter the salt water from the sand using a coffee filter

e)

add water to make a solution of salt water and sand mixture

34.

Figure A shows a beaker containing water, sand, and salt. The salt is totally dissolved in the water. Figure B shows the contents of the beaker being poured through filter paper in a funnel over a flask. Figure C shows the same flask after sitting at room temperature for 15 days. After 15 days, the flask contains only solid salt particles. the soluble substance is

a)

sand

b)

salt

35.

Figure A shows a beaker containing water, sand, and salt. The salt is totally dissolved in the water. Figure B shows the contents of the beaker being poured through filter paper in a funnel over a flask. Figure C shows the same flask after sitting at room temperature for 15 days. After 15 days, the flask contains only solid salt particles. the insoluble substance is

a)

sand

b)

salt

36.

Figure A shows a beaker containing water, sand, and salt. The salt is totally dissolved in the water. Figure B shows the contents of the beaker being poured through filter paper in a funnel over a flask. Figure C shows the same flask after sitting at room temperature for 15 days. After 15 days, the flask contains only solid salt particles. A solution can form with the mixture of

a)

sand,salt and water

b)

salt and water

c)

water only

d)

sand and salt

e)

sand and water

37.

Figure A shows a beaker containing water, sand, and salt. The salt is totally dissolved in the water. Figure B shows the contents of the beaker being poured through filter paper in a funnel over a flask. Figure C shows the same flask after sitting at room temperature for 15 days. After 15 days, the flask contains only solid salt particles. Why are the contents of the flask in figure B are classified as a mixture.

a)

because it is the physical combination of two or more substances. Can be separated by filtration and settling.

b)

because it is the chemical combination of two or more elements. Cannot be physical separated.

38.

Two friends are melting chocolate to make fudge. They do not have much time and want the chocolate to melt faster. Suggest TWO ways they can get the chocolate to melt faster.

a)

heat it more by putting it into direct sunlight

b)

crush it into smaller pieces

c)

shade it

d)

make it colder

39.

One example of a physical change is

a)

burning paper.

b)

baking cookies

c)

the rusting of iron

d)

breaking your pencil when you are mad

40.

One example of a chemical change is

a)

cutting up paper.

b)

burning gasoline in an engine.

c)

boiling water.

d)

crushing a can.

41.

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

a)

hardness

b)

color

c)

melting point

d)

reactivity

42.

Which process changes matter into one or more new substances?

a)

physical change

b)

chemical change

c)

conservation

d)

freezing

43.

Water vapor in the air turns to liquid water in the form of rain. This is an example of a

a)

physical change.

b)

chemical change.

c)

chemical equation.

d)

chemical formula.

44.

What happens when chemical bonds break and new bonds form?

a)

a physical change

b)

a chemical reaction

c)

matter is destroyed

d)

surface area increases

45.

The only sure evidence of a chemical reaction is

a)

the formation of a gas

b)

a color change

c)

the production of new materials

d)

changes in properties.

46.

Three examples of physical change are ____.

a)

boiling of water, bursting of a balloon, and crumpling a piece of paper

b)

burning of gasoline, rotting of an egg, and exploding fireworks

c)

freezing of water, evaporation of gasoline, and rusting a nail

d)

sawing of wood, crushing a can, and toasting a marshmallow

47.

The shape of an apple is a ____.

a)

chemical property

b)

physical property

48.

When a log burns in a fire, ____.

a)

a physical change has occurred

b)

mass is gained

c)

mass is lost

d)

new substances are formed

49.

What is the total number of atoms in the compound BaCO3?

a)

2

b)

3

c)

4

d)

5

50.

Which term describes a chemical property?

a)

BRB

b)

Mass

c)

density

d)

reactivity

51.

Which of the following is a chemical property?

a)

It is shiny and reflects light.

b)

It conducts electricity and heat.

c)

It will rust.

d)

It will melt at 661 ºC.

52.

Which change would be the most difficult to reverse?

a)

melting an ice cube, because it is a physical change

b)

dissolving sugar in water, because it is a chemical change

c)

burning a match, because it is a chemical change

d)

rusting an iron nail, because it is a physical change

53.

An unknown element has the following properties. Which of them is a chemical property?

a)

reacts with oxygen

b)

density of 0.97 g/cm3

c)

solid at room temperature

54.

A piece of aluminum will bend. This is an example of

a)

a chemical property

b)

an element

c)

a physical property

55.

Which of the following represents an element and not a compound?

a)

H2O

b)

Na

c)

CH4

d)

C6H12O6

56.

What does the bar connecting the two spheres represent?

a)

chemical bond

b)

atom

c)

element

d)

water

57.

What does each sphere represent?

a)

different elements

b)

compounds

c)

chemical bonds

58.

The larger sphere represents

a)

oxygen

b)

nitrogen

c)

hydrogen

d)

carbon

59.

The smaller sphere represents

a)

oxygen

b)

nitrogen

c)

hydrogen

d)

carbon

60.

In which state of matter are particles packed tightly together in fixed positions?

a)

solid

b)

liquid

c)

gas

61.

In which state of matter do the particles spread apart and fill all the space available to them?

a)

solid

b)

liquid

c)

gas

62.

In which state of matter do the particles spread apart and fill all the space available to them?

a)

solid

b)

liquid

c)

gas

63.

Elements that are metals are

a)

C

b)

Cu

c)

Ag

d)

Zn

e)

P

64.

Which elements will react the most similar?

a)

C

b)

F

c)

O

d)

Cl

e)

Ar