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Unit 1: Composition of Matter Practice Test

Total questions: 56

Worksheet time: 1hrs 12mins

Name
Class
Date
1.
All matter is made of 
a)
energy 
b)
atoms 
c)
air
d)
chemistry
2.
What is the atomic number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
3.
What is the mass number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
4.

In the modern periodic table, elements are arranged by:

a)

atomic mass

b)

atomic number

c)

valence electrons

d)

number of isotopes

5.

Anything that has mass and takes up space is called

a)

heterogeneous

b)

homogeneous

c)

matter

d)

density

6.

The number of protons in the nucleus of an atom

a)

atomic mass

b)

atomic number

c)

isotope

d)

nucleus

7.

equal to the number of protons plus neutrons in the nucleus of an atom

a)

atomic mass

b)

atomic number

c)

isotope

d)

valence electrons

8.

The vertical (up and down) columns in the Periodic Table are called

a)

groups

b)

towers

c)

periods

d)

atomic numbers

9.
Elements in a ..................have similar chemical properties.  
a)
period
b)
group
c)
row
10.

What group is this element located in?

a)

5

b)

6

c)

7

d)

8

11.

The horizontal (left to right) rows on the periodic table are known as

a)

periods.

b)

atoms.

c)

groups or families.

d)

valence electrons.

12.

one or two letters that represent the name of an element

a)

element name

b)

element symbol

c)

atomic number

d)

atomic mass

13.

The number of electrons in an atom is equal to the...

a)

Atomic number

b)

Protons

c)

Atomic Mass

d)

Neutrons

14.

The formula used to calculate the number of neutrons is:

a)

Mass Number - Atomic Number

b)

Protons + Electrons

c)

Atomic Number - Mass Number

d)

Protons x2

15.
The positive particles of an atom are 
a)
electrons 
b)
positrons 
c)
neutrons 
d)
protons 
16.

What particles are in the nucleus?

a)

Protons

b)

Neutrons

c)

Electrons

d)

Nucleus

17.

Which particle is outside the nucleus?

a)

Protons

b)

Neutrons

c)

Electrons

d)

Nucleus

18.

Which two particles have mass?

a)

Protons

b)

Neutrons

c)

Electrons

d)

Nucleus

19.
Elements are made of 
a)
many types of atoms 
b)
the periodic table
c)
one type of atom 
d)
molecules 
20.
Two or more atoms chemically bonded together are called a
a)
atom
b)
element
c)
molecule
d)
mixture
21.

Two or more atoms NOT chemically bonded together are called a

a)
atom
b)
element
c)
molecule
d)
mixture
22.

This picture represents which of the following?

a)

Element

b)

Compound

c)

Mixture

23.

The ______ are numbers found on the lower right-hand side of an element symbol.

a)

Coefficient

b)

Exponent

c)

Multiplier

d)

Subscript

24.

Coefficients in chemical formulas...

a)

Multiply just the first atom

b)

Add to the subscripts at the end of the molecule

c)

Multiply elements without subscripts

d)

Multiply EVERYTHING!

25.

How many different elements are present in this molecule?

3 NH4C2H3O2

a)

15

b)

36

c)

5

d)

4

26.

What is a compound?

a)

A compound is a substance that contains more than one type of atom.

b)

An atom with protons, neutrons, and electrons.

c)

A pure substance that contains only one type of atom.

d)

Part of an atom.

27.

What is a chemical bond?

a)

A pure substance made up of two or more different atoms.

b)

Two or more atoms.

c)

The attractive force that hold tow or more atoms together.

d)

It is two Hydrogen atoms.

28.

What is a molecule?

a)

two elements bonded together (sharing electrons)

b)

a mixture of different substances

c)

smallest individual particles

d)

salt mixed in water

29.

Which of the following is a chemical formula?

a)

H2SO4

b)

Si

c)

Hg

d)

C

30.

How many bonds can Carbon make? (**Hint HONC rule)

a)

2

b)

4

c)

1

d)

3

31.
A change that does not result in a new substance.
a)
Physical Change
b)
Chemical Change 
32.
Which answer makes a correct statement?
a)
Physical change only changes the size.
b)
Physical change only changes the color.
c)
Physical changes begin and end with the same matter.
d)
Physical changes change the matter into something total different.
33.
A group of students investigated physical and chemical changes using paper.  The students recorded their observations in a table.
Which student correctly recorded all the changes that took place?
a)
Student 1
b)
Student 2
c)
Student 3
d)
Student 4
34.
The ability for a nail to rust is a 
a)
bummer
b)
physical property
c)
chemical property
d)
reactant
35.
Elements are
a)
composed of molecules
b)
pure substances that cannot be broken down into other substances
c)
mixtures of compounds
d)
composed of different types of atoms
36.

A physical change is

a)

a change where the characteristics do not change the substance

b)

a change where the characteristics do change the substance

c)

a change where the chemistry changes

37.

A chemical change is when

a)

the chemical properties change

b)

the chemical properties do not change

c)

a change where the characteristics do not change the substance

38.

When you describe how matter reacts with other matter--for example you describe a substance's flammability or toxicity

a)

Chemical properties

b)

Physical properties

39.

When you describe matter by color, size, shape, state it is known as the

a)

Chemical properties

b)

Physical properties

40.

different materials placed together, but each material keeps its own properties

a)

mixture

b)

solution

c)

physical change

d)

chemical change

41.

a change in some properties of matter without forming a different kind of matter

a)

mixture

b)

solution

c)

physical change

d)

chemical change

42.

a change of one or more types of matter into other types of matter with different properties.

a)

mixture

b)

solution

c)

physical change

d)

chemical change

43.
Mass, relative density, solubility, color, texture, state of matter, conductivity, etc.
a)
Physical state
b)
Insulators
c)
Physical Properties 
d)
Inferences
44.

Select only those that are Chemical Properties of Matter.

a)

Texture

b)

Ability to react with other substances

c)

Hardness

d)

Ability to rust

e)

Ability to conduct heat

45.

Select only those that are Physical Properties of Matter.

a)

Texture

b)

Ability to react with other substances

c)

Ability to conduct heat

d)

Hardness

e)

Ability to rust

46.

3-dimensional, repeated patterns make up _____.

a)

Polymers

b)

Crystals

c)

Simple Molecule

d)

Extended Structure

47.

This is an example of a 

a)

Polymer

b)

Crystal

c)

Box

d)

Atom

48.

_______ form as a result of repeated patterns of atoms or molecules..

a)

Simple Molecule

b)

Polymer

c)

Crystal

d)

Extended Structure

49.

One difference between a polymer and a crystal is that...

a)

A crystal is a two-dimensional structure

b)

A crystal is a three-dimensional structure

c)

A polymer is a three-dimensional structure

50.

Match the following

a)

Crystal

1.

molecules appearing in any direction and forming geometric shapes

b)

Polymer

2.

molecules forming long chains

c)

Crystals AND Polymers

3.

molecules packed together in an orderly fashion

51.

Match the following

a)

Made of repeated subunits of molecules

1.

Polymer

b)

Made of repeated atoms OR molecules

2.

Crystals

c)

Crystals

3.

Geometric patterns

d)

Polymers

4.

Chain pattern

52.

Is the extended structure pictured a polymer or a crystal?

a)

crystal

b)

polymer

53.

Is the extended structure pictured a polymer or a crystal?

a)

crystal

b)

polymer

54.

Label the following item

a)Proton
b)Electron
c)Neutron
1
2
3
1)
2)
3)
55.

How many total atoms in the following equation?

2(H2)3

a)

2

b)

6

c)

7

d)

12

56.

How many atoms of Hydrogen are in this equation?

5Cl2H5

a)

10

b)

2

c)

5

d)

25

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