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Chemistry Unit Test

Total questions: 60

Worksheet time: 39mins

Name
Class
Date
1.

The positively charged particle in an atom.

a)

Proton

b)

Neutron

c)

Electron

d)

Nucleus

2.

Identifies the number of protons in an atoms nucleus.

a)

Electron Cloud

b)

Atomic Theory

c)

Atomic Number

d)

Mass Number

3.

The negatively charged particles in an atom

a)

Proton

b)

Electron

c)

Neutron

d)

Electron Cloud

4.

A charged atom

a)

Ion

b)

Isotope

c)

Proton

d)

Electron

5.

Atoms of the same element that have different numbers of neutrons

a)

Ion

b)

Isotope

c)

Proton

d)

Electron

6.

The total number of protons and neutrons in the nucleus of an atom

a)

Atomic Number

b)

Mass Number

c)

Atomic Theory

d)

Electron Cloud

7.

The small, dense, positively charged center of an atom

a)

Neutron

b)

Proton

c)

Nucleus

d)

Electron

8.

The center of an atom where its neutrons and protons are is called the _____________.

a)

nucleus

b)

electron cloud

c)

center

9.
An atom is made up of protons, neutrons, and electrons.  Which is the smallest subatomic particle?
a)
Proton
b)
Neutron
c)
Electron
d)
Idontknowatron
10.
Each row in a periodic table is called a 
a)
Group
b)
Period
c)
Row
d)
Column
11.
Each column in the periodic table is called a 
a)
period
b)
group
c)
cluster
d)
unit
12.
Which is an electron?
a)
A
b)
B
c)
C
13.

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

a)

31

b)

5

c)

15

d)

4

14.
Most of the elements on the periodic table are classified as _____.
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Periods
15.
This class of elements are sometimes called "semiconductors."
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Groups
16.

Metals are found on the ______________ side of the periodic table.

a)

nonmetals

b)

left

c)

right

d)

metals

17.

This group of elements have properties that are opposite those of metals. ______________________

a)

luster

b)

nonmetals

c)

metalloids

d)

metals

18.
How are elements on the periodic table arranged by?
a)
in alphabetic order
b)
simular physical & chemical properties
c)
their symbols
d)
Just simular physical properties
19.
Two elements chemically bonded form
a)
element
b)
compound
c)
mixture
d)
solutions
20.

The Atomic number is known as the _______

a)

Number of electrons in an atom

b)

Number of Protons in an atom

c)

Number of neutrons in an atom

d)

Number of Protons and electrons in an atom

21.

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

22.

How many periods are on the periodic table?

a)

5

b)

6

c)

7

d)

8

23.

Elements in the same group have : (2 correct answers)

a)

Similar chemical properties

b)

Similar names

c)

Same number of outer (valence) electrons)

d)

The same number of protons

24.

What does the 6 represent?

a)

atomic mass

b)

atomic number

c)

element name

d)

chemical symbol

25.

What does 12.011 represent?

a)

atomic mass

b)

atomic number

c)

element name

d)

chemical symbol

26.

Which is an alkali metal?

a)

Magnesium

b)

Iron

c)

Sodium

d)

Europium

27.

Which is a halogen?

a)

Helium

b)

Chlorine

c)

Oxygen

d)

Neptune

28.

Name this group: These metals are the second most reactive.

a)
b)
c)
d)
29.

Name this group: These metals are the most reactive.

a)
b)
c)
d)
30.

I am a nonmetal

I am in period 2

I am in group 16/6A

a)

Ba

b)

Si

c)

O

d)

S

31.

I am a metal

I am in group 2

I am in period 6

I am…

a)

Mo

b)

Re

c)

S

d)

Ba

32.

These two elements have similar chemical properties to Barium (Ba).

a)

Ca and Ra, because they are in the same group.

b)

Cs and La, because they are in the same period number.

c)

Ca and Y, because they are 90 degree angle.

33.

How many atoms of Hydrogen are in H2O

a)

1

b)

2

c)

3

d)

more than 3

34.

How many different elements are present in H2COCH2

a)

5

b)

4

c)

3

d)

2

35.

Calculate the number of Oxygen atoms in Al(OH)3

a)

1

b)

2

c)

3

d)

4

36.

How many Magnesium atoms are in 10MgCl2?

a)

10

b)

5

c)

20

37.

How many Sodium atoms are in 6NaCl?

a)

1

b)

12

c)

6

38.

How many atoms are there TOTAL in H2SO4 ?

a)

6

b)

5

c)

7

d)

3

39.

How many total POTASSIUM atoms are in this formula?

a)

8

b)

2

c)

4

d)

12

40.

What determines the reactivity of an element?

a)

protons

b)

neutrons

c)

electrons

d)

valence electrons

41.
Elements in the same column of the periodic table always have the same # of _______ as one another.
a)
Protons
b)
Neutrons
c)
Electrons
d)
Valence Electrons
42.
The atoms along the staircase are called 
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
43.
Which group of the periodic table is composed of inert (not reactive)  gases?
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
44.
Which is a halogen?
a)
Helium
b)
Chlorine
c)
Oxygen
d)
Neptune
45.

Ions are formed when atoms gain or lose ___.

a)

electrons

b)

protons

c)

neutrons

d)

atomic mass

46.

The common charge on an atom in group 17 would be....

a)

+1

b)

+7

c)

-7

d)

-1

e)

17

47.

What family is highlighted in the picture?

a)

Alkali Metals

b)

Alkaline Earth Metals

c)

Halogens

d)

Noble Gases

48.

What family is highlighted in the picture?

a)

Alkali Metals

b)

Alkaline Earth Metals

c)

Halogens

d)

Noble Gases

49.

What family is yellow in the picture?

a)

Boron Group

b)

Carbon Group

c)

Transition Metals

d)

Noble Gases

50.

What family is dark purple in the picture?

a)

Boron Group

b)

Halogens

c)

Transition Metals

d)

Noble Gases

51.

What family is highlighted in the picture?

a)

Boron Group

b)

Halogens

c)

Transition Metals

d)

Noble Gases

52.

What group of metals is the MOST reactive?

a)

Transition Metals

b)

Metalloids

c)

Alkaline Earth Metals

d)

Alkali Metals

53.

What group of nonmetals is the MOST reactive?

a)

Noble Gases

b)

Nitrogen Group

c)

Halogens

d)

Lanthanides

54.

What type of elements are red in the picture?

a)

Nonmetals

b)

Metals

c)

Metalloids

55.

What type of elements are green in the picture?

a)

Nonmetals

b)

Metals

c)

Metalloids

56.

What type of elements are blue in the picture?

a)

Nonmetals

b)

Metals

c)

Metalloids

57.
True or False: a physical change may produce a new substance.
a)
True
b)
False
58.
A copper penny turning greenish after a few years is an example of ...
a)
Chemical Change
b)
Physical Change
59.
Bubbles form when two or more substances are combined ...
a)
Chemical Change
b)
Physical Change
60.
Sodium has an atomic number of 11, how many protons does this atom have?
a)
22
b)
11
c)
12
d)
2

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