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Chemistry I Chapter 3 Test

Total questions: 45

Worksheet time: 27mins

Name
Class
Date
1.

Matter that has a uniform and changing composition is called a pure substance.

a)
True
b)
False
2.
A solid cannot be compressed because its particles are tightly packed.
a)
True
b)
False
3.
An intensive physical property is one that depends on the amount of matter present.
a)
True
b)
False
4.
A change in state of matter is a physical change.
a)
True
b)
False
5.
When a chemical change occurs, the products have a greater mass than the reactants.
a)
True
b)
False
6.
An alloy, like brass, is a special type of homogeneous mixture in which a solid is mixed with a solid.
a)
True
b)
False
7.

Filtration is a separation technique used to produce rock candy from a sugar solution.

a)
True
b)
False
8.
The periodic table organizes elements into a grid of vertical columns known as periods.
a)
True
b)
False
9.
The change in the color of tree leaves in fall is an example of a physical change.
a)
True
b)
False
10.
Mendeleev’s original table could accommodate elements that did not even exist.
a)
True
b)
False
11.
Which is the state of matter that has a definite shape and definite volume?
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
12.
Which is the state of matter that has an indefinite shape and definite volume?
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
13.
Which is the state of matter that has an indefinite shape and indefinite volume?
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
14.
Which is an extensive physical property?
a)
color
b)

volume

c)
density
d)
boiling point
15.
Which is an intensive physical property?
a)

temperature

b)
mass
c)
length
d)
volume
16.
What is the change of state in which a solid becomes a liquid?
a)
Liquefaction
b)
melting
c)
condensation
d)
sublimation
17.
What is the change of state in which a gas becomes a liquid?
a)
Liquefaction
b)
melting
c)
condensation
d)
sublimation
18.
Which is the type of separation technique being demonstrated in the figure?
a)
crystalization
b)
distillation
c)
filtration
d)
chromatography
19.

Samples of gases containing nitrogen and oxygen were decomposed by electricity and the volume of each gas produced was measured. Based on these results, which is the correct chemical formula for Sample 1?

a)
N2O3
b)
NO
c)
NO2
d)
N2O
20.
Samples of gases containing nitrogen and oxygen were decomposed by electricity and the volume of each gas produced was measured. Based on these results, which is the correct chemical formula for Sample 4?
a)
N2O3
b)
NO
c)
NO2
d)
N2O
21.
Which is the separation technique that relies on the different boiling points of the parts of the mixture?
a)
filtration
b)
distillation
c)
chromatography
d)
crystallization
22.
Which is the separation technique that identifies parts of a mixture based on how fast different compounds move across a material?
a)
filtration
b)
distillation
c)
chromatography
d)
crystallization
23.
Which is a compound?
a)
sodium
b)
sea water
c)

sodium chloride

d)
brass
24.
A 25.0-gram sample of magnesium oxide contains 10.8 grams of magnesium. What is the percent of oxygen by mass in this compound?
a)
89.2%
b)
14.2%
c)
43.2 %
d)
56.8%
25.
According to the Law of Conservation of Mass, in any chemical change
a)
the mass of reactants is greater than the mass of products
b)
the mass of reactants is less than the mass of products
c)
the mass of reactants is equal to the mass of products
d)
the masses of products and reactants have no predictable relationship
26.
Which is a chemical property of copper?
a)
has a boiling point of 2567 °C
b)
reacts in air to form a green layer
c)
has the symbol Cu
d)
is a solid at room temperature
27.
Which of the following substances is a element?
a)
Baking Soda
b)

Aluminum

c)
Salt
d)

Water

28.
Which of the following substances is a mixture?
a)
Baking Soda
b)
Gasoline
c)
Salt
d)
Sugar
29.
A chemical composition of two or more different elements joined together in fixed proportions is known as a(n) ____.
a)
compound
b)
element
c)
homogeneous mixture
d)
heterogeneous mixture
30.
The law of ____ states that a compound is always composed of the same elements in the same proportion by mass.
a)
conservation of energy
b)
conservation of mass
c)
definite proportions
d)
multiple proportions
31.

An 6.00-g sample of aluminum reacts with oxygen to form 10.20 g of aluminum oxide. How many grams of oxygen are used in the reaction?

a)

10.20 grams

b)

4.20 grams

c)

6.00 grams

d)

16.20 grams

32.

A 70.00-g sample of an unknown compound contains 37.66 g of sulfur. What is the percentage by mass of sulfur in the compound?

a)
0.23 %
b)
53.80 %
c)
86.20 %
d)
23.14 %
33.
Choose the property from the list that is not a physical property.
a)
solubility
b)
color
c)
density
d)
combustibility
34.
Characteristics of a substance can be classified as physical properties or chemical properties. Which of the following is a chemical property?
a)
Boils at 56ºC
b)
Tastes sour
c)
Has a density of 2.9 g/cm3
d)
Reacts with acid to produce Hydrogen gas
35.
In the periodic table, a series of elements that is arranged in a horizontal row is called a ___________________________.
a)
cluster
b)
family
c)
period
d)
group
36.
In the periodic table, a series of elements that is arranged in a vertical column is called a ___________________________.
a)
cluster
b)
family
c)
period
d)
group
37.

What term or phrase best completes the diagram labeled C.

a)
Homogeneous Mixture
b)
Heterogeneous Mixture
c)
Elements
d)
Compounds
38.

What term or phrase best completes the diagram labeled D.

a)
Homogeneous Mixture
b)
Heterogeneous Mixture
c)
Elements
d)
Compounds
39.

What term or phrase best completes the diagram labeled A.

a)
Homogeneous Mixture
b)
Heterogeneous Mixture
c)
Elements
d)
Compounds
40.

What term or phrase best completes the diagram labeled B.

a)
Homogeneous Mixture
b)
Heterogeneous Mixture
c)
Elements
d)
Compounds
41.

Which pair are an example of a physical change?

a)

Boil, Crumple

b)

Freeze, Burn

c)

Melt, Explode

d)

Crush, Rust

42.

Which pair is a chemical change?

a)

Explode, Grind

b)

Burn, Rot

c)

Oxidize, Crush

d)

Corrode, Vaporize

43.

A 3.11 gram sample of oxygen reacts 14.89 with grams of copper to form a green compound.  What is the percentage composition of both oxygen and copper in this compound?

a)

17.27% O and 87.72% Cu

b)

87.72% O and 17.27% Cu

c)

20.89% O and 79.11% Cu

d)

79.11% O and 20.89% Cu

44.

The mineral cassiterite is mined as a commercial source of tin.  It is a compound that is composed of the elements tin and oxygen.  A 1.000-kg sample of pure cassiterite that was mined in Germany contains 650 grams of tin.  Determine the mass of tin that would be contained in a 51.2-kg sample of cassiterite that was mined in South America.

a)
33.28 kg
b)
15.0 kg
c)
40.5 kg
d)
25.6 kg
45.

Carbon reacts with oxygen to form two different compounds.  Compound #1 contains 4.82 grams of carbon for every 9.64 grams of oxygen.  Compound #2 contains 20.13 grams of carbon for every 40.27 grams of oxygen.  What is the ratio of carbon to a fixed amount of oxygen for the two compounds?

a)
1:1
b)
3:2
c)
2:1
d)

1:2

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