Free Printable Unit Test

1.

The positive ions tend to _____________ electrons.

a)

lose

b)

gain

2.

When an atom loses an electron, it becomes a

a)

positive ion

b)

negative ion

c)

neutral ion

d)

neutral atom

3.

Why do all bonds form?

a)

so the number of protons equals the number of electrons

b)

so an atom can become unstable

c)

to fill the outermost energy level

4.

Ionic bonds are between...

a)

Metal and Non-metal

b)

Non-metal and Non-metal

c)

Metal and Metal

5.

How are ionic bonds formed?

a)

Transfer of electrons

b)

Sharing of electrons

6.

The negative ions tend to _____________ electrons.

a)

lose

b)

gain

7.

How do covalent bonds form?

a)

Donating & receiving valence e- between atoms.

b)

Opposite slight charges attract each other between compounds.

c)

Scientists are still not sure how they form.

d)

Sharing valence e- between atoms.

8.

What two types of atoms make a covalent bond?

a)

2 Nonmetals

b)

1 Nonmetal and 1 Metal

c)

2 Metals

d)

2 Noble Gases

9.

Name the following compound:
CO₂

a)

monocarbon dioxide

b)

carbon oxide

c)

carbon dioxide

d)

oxygen carbonide

10.

Which of the following is an ionic compound:

a)

CH4

b)

I2

c)

LiBr2

d)

CO

11.

name the following ionic compound: NaF

a)

nitrogen fluorine

b)

sodium fluoride

c)

nitrogen fluoride

12.

Which of the following is an Covalent Compound:

a)

CaO

b)

NaCl

c)

Cl₂

d)

CO

13.

What type of bond occurs between metals?

a)

Metallic bond

b)

Covalent bond

c)

Hydrogen bond

d)

Ionic Bond

14.

What's the difference between Cohesion and Adhesion?

a)

Cohesion is the attraction between the same substance and Adhesion is the attraction of different substances

b)

they both attract different substances

c)

They don't attract anything

15.

Refer to the picture of water sticking to a leaf; this is occurring because of:

a)

Adhesion

b)

Cohesion

16.

Which property of water provides the cooling effect of sweating?

a)

cohesiveness

b)

surface tension

c)

high heat of vaporization

17.

Which of the following is an example of heat capacity/specific heat?

a)

ice floats in water

b)

sugar disappears when added to water

c)

it takes several weeks of warm temperatures to raise lake water several degrees.

18.

Non-stick pan works because it has an oily surface.

a)

True

b)

False

19.

Which of the following is NOT a property of water?

a)

Polarity

b)

Combustible

c)

High Heat Capacity

d)

Capillary Action

20.

What type of reaction is this:

P4 + 3 O2 -> 2 P2O3

a)

Combustion

b)

Single Replacement

c)

Double Replacement

d)

Synthesis

21.

What type of Chemical Reaction is this:

2 AgNO3 + Cu --> Cu(NO3)2 + 2 Ag

a)

Single replacement

b)

Double Replacement

c)

Decomposition

d)

Synthesis

22.

What type of Chemical Reaction is this:

Na3PO4 + 3 KOH --> 3 NaOH + K3PO4

a)

Single replacement

b)

Double Replacement

c)

Decomposition

d)

Synthesis

23.

What type of reaction is this:

2 NO2 --> 2 O2 + N2

a)

Combustion

b)

Single Replacement

c)

Synthesis

d)

Decomposition

24.

Which part of a water molecule has a Positive Charge?

a)

The Hydrogen

b)

The Oxygen

25.

What is the correct chemical formula for water?

a)

H₂O

b)

HO₂

c)

H₂O₂

26.

Which of the followings is the Double Replacement Reaction?

a)

$MgCl_2+Li_2CO_3-->MgCO_3+2LiCl$

b)

$C_6H_{12}+9O_2-->6CO_2+6H_2O$

c)

$2NH_3+H_2SO_4-->(NH_4)2SO_4$

27.

Which of the followings is the Combustion Reaction?

a)

$3Pb+2H_3PO_4-->3H_2+Pb_3(PO_4)_2$

b)

$C_6H_{12}+9O_2-->6CO_2+6H_2O$

c)

$2NH_3+H_2SO_4-->(NH_4)2SO_4$

28.

Which of the following elements will form a cation?

a)

Copper

b)

Bromine

c)

Fluorine

29.

Which of the following will form an anion?

a)

Titanium

b)

Calcium

c)

Sulfur

30.

Which of the following will form a cation?

a)

Aluminum

b)

Sulfur

c)

Iodine

d)

Nitrogen

31.

Which of the following will form an anion?

a)

Tin

b)

Lead

c)

Chlorine

d)

Zinc

32.

The chemical formula for CaS is

a)

Cerium sulfide

b)

Carbon sulfur

c)

Calcium sulfide

d)

Calcium sulfur

33.

What is charge for this polyatomic ion? CH₃COO^-

a)

-1

b)

3

c)

2

34.

What is the charge of this polyatomic ion? NO₂^-

a)

-1

b)

2

c)

1

d)

Ammonium

35.

How many atom are there total in SO_⁴^-2

a)

5

b)

8

c)

3

36.

How many elements are in this chemical formula?

HCl

a)

1

b)

2

c)

3

d)

4

37.

What is the total number of atoms in this formula? $H_2O_2$

a)

2

b)

4

c)

3

38.

What is the total number of atoms in this chemical formula? $C_8H_3NaBr_{12}$

a)

18

b)

12

c)

25

d)

24

39.

How many H atoms are in 4H₂O?

a)

6

b)

8

c)

2

d)

4

40.

How many atoms are there TOTAL in:
H₂SO₄

a)

6

b)

5

c)

7

d)

3

41.

Which is the correct formula for:
three hydrogen (H)
one sulfur (S)
four oxygen (O)

a)

H₃SO₄

b)

HSO₄

c)

H₄S₃O

d)

H₂O

42.

Number of atom of Carbon are there in 2Na₂CO₃

a)

1

b)

2

c)

3

d)

5

43.

Which is the correct formula for: One hydrogen (H) one sulfur (S) four oxygen (O)

a)

HSO₄

b)

H₄S₃O

c)

H₂O

44.

Which is the correct formula for: One Iron (Fe), ten Carbon (C), ten hydrogen (H)

a)

$Fe(C_5H_5)_2$

b)

$H_{10}C_{10}Fe_2$

c)

$Fe(SO_4)$

45.

Which element is an Cation in this compound:

$CaCO_3$

a)

Calcium

b)

Carbon

c)

Oxygen

d)

$CO_3$

46.

Which element is an Anion in this compound:

RbF

a)

Rubidium

b)

Fluorine

47.

In an Ionic compound, which kind of ion will stand in the front?

For example: $MgCl_2$

a)

Cation

b)

Anion

48.

At what temperature in degrees Celsius does water freeze?

a)

150

b)

0

c)

200

d)

32

49.

Using dye to change the color of a shirt green will ....

a)

change the chemical makeup of the shirt forever.

b)

will NOT change the chemical makeup of the shirt.

50.

Which of the following could indicate that a chemical change took place?

a)

Change in color

b)

Production of Energy

c)

Formation of Gas

d)

All are correct

51.

Which type of change are irreversible?

a)

Chemical Changes

b)

Physical Changes

c)

Changes in Attitude

52.

What is the funniest thing that ever happened to you?

4 lines

53.

Do you add energy to break the bond or remove energy to break the bond?

a)

Add

b)

Remove

54.

When a Chemical Reaction release heat and you feel warm, what type of reaction is this?

a)

Endothermic Reaction

b)

Exothermic Reaction

55.

The Chemical reaction turn the bottle cold, what type of reaction is this?

a)

Exothermic Reaction

b)

Endothermic Reaction

c)

Condensation

56.

In an endothermic reaction, heat is ...

a)

taken in

b)

given out

57.

In an exothermic reaction, heat is ...

a)

taken in

b)

given out

58.

What type of reaction occurs in a hand warmer?

a)

exothermic

b)

endothermic

59.

What does catalyst do to a reaction?

a)

Slows down the reaction

b)

Nothing changes

c)

Speeds up the reaction

Unit Test

Total questions: 59

Worksheet time: 3hrs 37mins

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