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Density and Molecules and Mixtures

Total questions: 53

Worksheet time: 3hrs 39mins

Name
Class
Date
1.
Elements are made of 
a)
many types of atoms 
b)
the periodic table
c)
one type of atom 
d)
molecules 
2.
All matter is made of 
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
3.
Two or more atoms chemically bonded together are called a
a)
atom
b)
element
c)
molecule
d)
mixture
4.

Which colored particle is the electron?

a)

blue

b)

red

c)

yellow

d)

red and yellow

5.

H₂O is a compound molecule.

a)

TRUE

b)

FALSE

6.

O2 is a compound molecule.

a)

TRUE

b)

FALSE

7.

What is the picture displayed?

a)

atom

b)

element molecule

c)

compound molecule

8.
How many Hydrogen atoms are in Water (H2O)
a)
1
b)
2
c)
3
d)
4
9.

Are these molecules also compounds?

a)

YES

b)

NO

10.

Which of the following is NOT a compound?

a)

HCl

b)

Cl2

c)

NaCl

d)

CO2

11.

Which of the following represents an element molecule?

a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
12.

This picture represents which of the following?

a)

elemental molecule

b)

compound molecule

13.
a)

Element

b)

compound molecules

c)

elemental molecules

d)

Mixture

14.
Which of the following chemical formulas represents a compound? 
a)
C3
b)
O2
c)
CH3CHO
d)
H2
15.
Which statement best describes an element?
a)
made from mixture 
b)
thousands in the world
c)
pure, made of only one atom
d)
can be separated 
16.
Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is –
a)
a gas at room temperature.
b)
made of two different elements.
c)
given off by green plants.
17.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
18.
What is the term for combining 2 or more atoms together?
a)
atoms
b)
elements
c)
molecules
d)
compounds
19.

It is a combination of two or more substances.

a)

Substances

b)

Mixtures

c)

Elements

d)

Compound

20.

It is a mixture with a non-uniform composition.

a)

Homogeneous mixture

b)

Solvation process

c)

Heterogeneous mixture

d)

Solubility

21.

It is a combination of two or more substances in

which the composition is uniform throughout the

mixture.

a)

Heterogeneous mixture

b)

Homogeneous mixture

c)

Solvation

d)

Solution

22.

When substances are combined as a mixture, _______________.

a)

they keep their physical properties

b)

their physical properties combine

c)

their physical properties change

d)

they lose some of their physical properties

23.

Substances that are made up of ONLY one type of atom (element) or compound.

a)

Heterogeneous mixture

b)

Pure substance

c)

Suspension

d)

Homogeneous mixture

24.

Which of the following is classified as a pure substance?

a)

Lemonade

b)

Fruit punch

c)

ketchup

d)

Hydrogen

25.
What is matter?
a)
Anything that has mass and occupies space
b)
Anything that has mass
c)
Anything that is made of air
d)
ALL of them 
26.
Which of the following is a pure substance? 
a)
Water
b)
Sugar
c)

Gold

d)
ALL of them
27.

Which of the following is NOT a mixture?

a)

milk

b)

lemonade

c)

vegetable salad

d)

carbon

28.

Which of these is an element?

a)

Salt (NaCl)

b)

Water (H20)

c)

Oxygen (O)

d)

Carbon Dioxide (CO2)

29.

Which of these is a compound?

a)

Aluminium (Al)

b)

Carbon Dioxide (CO2)

c)

Nitrogen (N)

d)

Sand

30.

True or False: Elements and compounds are pure substances.

a)

True

b)

False

31.

Identify which images are HETEROGENEOUS MIXTURES! (Check all that apply)

a)
b)
c)
d)
32.

Solutions are ___________ mixtures.

a)

Solid

b)

Homogenous

c)

Heterogeneous

d)

Gas

33.
Max is hungry and he prepares cereal with milk. This is an example of a: 
a)
Homogeneous mixture
b)
Heterogeneous mixture
34.
What are the two types of Mixtures
a)
Elements and Subatomic Particles
b)
Protons and Electrons
c)
Atoms and Compounds
d)
Homogenous and Heterogeneous
35.

What type of mixture does this diagram represent?

a)

Homogeneous

b)

Heterogeneous

36.
What type of mixture is this?
a)
homogenous mixture
b)
chemical
c)
heterogeneous mixture 
d)
solid mix
37.
Put the liquids in order from most dense to least dense?
a)
4, 3, 2, 1
b)
1, 2, 3, 4
c)
3, 4, 2, 1, 
d)
4, 3, 1, 2
38.

A piece of copper has a mass of 89g and a volume of 10.0 cm3. What would be the density of the copper?

a)

0.89 g/cm3

b)

89 g/cm3

c)

8.9 g/cm3

d)

890 g/cm3

39.

What is the volume of 150.0 grams of lead if it has a density of 11.3 g/cm3?

a)

13.3 g

b)

13.3 cm3

c)

.075 g

d)

1695 cm3

40.

A cube of aluminum has a volume of 9cm3 and weighs 81 g. What is its density?

a)

9 g/ cm3

b)

.11 g/cm3

c)

729 g/cm3

41.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
42.
What is the density of a liquid that has a mass of 27g and a volume of 30ml?
a)
0.9 g/ml
b)
3 g/ml
c)
57 g/ml
d)
810 g/ml
43.
What is the volume of 150 grams of lead if it has a density of 11.3 g/cm3? (All calculations should have the correct sig figs)
a)
13.3 g
b)
13 cm3
c)
1695 g
d)
1700 cm3
44.
If an object has a density of 21.45 g/cm3, what will be the density of the object if you cut it in half? (All calculations should have the correct sig figs)
a)
21.45 g/cm3
b)
10.725 g/cm3
c)
2 g/cm3
d)
42.9 g/cm3
45.
Calculate the mass of a substance which has a volume of 35.0 cm3 and a density of 0.50 g/cm3.(All calculations should have the correct sig figs)
a)
17.5 g
b)
0.014 g
c)
18 g 
d)
70. g
46.

If all masses are 20g, which material has the GREATEST volume? (Volume = mass/density)

a)

Oil

b)

Kool-aid

c)

Sprite

d)

Vinegar

47.

If I cut a block of gold in half, what happens to its density?

a)

Density is cut in half.

b)

Density stays the same.

c)

Density doubles.

d)

Density cannot be determined.

48.

The mass of the jade is 13g, what is the density?

a)

1.3 g/mL

b)

0.81 g/mL

c)

1.24 g/mL

d)

0.77 g/mL

49.

What is the same about the cubes?

a)

Density

b)

Weight

c)

Mass

d)

Volume

50.

What is the volume of the cubes?

a)

216 cm3

b)

36 cm3

c)

18 cm3

d)

108 cm3

51.

What happens to the density of the balloon if volume is doubled?

a)

The density is cut in half.

b)

The density stays the same.

c)

The density doubles.

d)

Not enough information to tell.

52.

Which physical property stays the same when water goes from a solid to a liquid and then to a gas?

a)

Density

b)

Mass

c)

Volume

d)

Temperature

53.

What is different when you are on the moon?

a)

Mass

b)

Volume

c)

Density

d)

Weight

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