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SEMESTER 1 CHEMISTRY REVIEW

Total questions: 75

Worksheet time: 3hrs 49mins

Name
Class
Date
1.
Beakers are used
a)
to measure volume with high accuracy and precision
b)
to hold small amounts of dry chemicals
c)
to recover dissolved solids
d)
to measure approx. volumes and observe reactions
2.
Which of the following  is the most accurate and precise for measuring the volume of a liquid?
a)
Beaker
b)
Erlenmeyer flask
c)
Graduated Cylinder
d)
Round bottomed flask
3.
In ANY safety related incident, what is the FIRST thing you need to do?
a)
Decide if you're going to be in trouble or not before doing anything
b)
Point to the person responsible and shout "He/she did it!"
c)
Tell your teacher
d)
Sit quietly until everything calms down
4.
The basic unit of measurement for mass is...
a)
Liters
b)
Grams/liter
c)
Meters
d)
Grams
5.
Exploding Fireworks is an example of a...?
a)
Physical Change 
b)
Chemical Change 
6.
In a solid, the particles
a)
vibrate in place
b)
slide past one another
7.
A change where one or more new substances are created.
a)
Physical Change 
b)
Chemical Change 
8.
What state of matter is represented here?
a)
solid
b)
liquid
c)
gas
9.
Cutting your hair is an example of a...?
a)
Physical Change
b)
Chemical Change
10.
Which tool would be used to measure the mass of an object?
a)
electronic balance
b)
beaker
c)
meter stick
d)
iPad
11.
A copper penny turning greenish after a few years is an example of a...
a)
Chemical Change
b)
Physical Change
12.
During lab activities that involve, glassware, heat or chemicals you should wear..
a)
Eyeglasses
b)
A protective suit
c)
Goggles and an apron
d)
Just normal clothing
13.
What state of matter is represented here?
a)
solid
b)
liquid
c)
gas
14.
When should you use the safety shower?
a)
After P.E.
b)
After spilling chemicals onto your body
c)
Before going out on a date
d)
Never
15.
What should you do if you break glass in the lab?
a)
Tell the teacher, sweep up the glass, and put it in the broken glass container
b)
Tell the teacher, sweep up the glass, and dump it into the garbage
c)
Pick up the glass with your hands
d)
Ignore it; the teacher will clean it up
16.
Are made from a combination of 2 or more elements...
a)
Molecules
b)
Pure Substances
c)
Compounds
d)
Elements
17.
A combination that can be separated by physical processes is a .....
a)
Pure Substance
b)
Glucose
c)
Element
d)
Mixture
18.
A mixture that is NOT evenly distributed is called ....
a)
Compounded
b)
Homogenous
c)
Heterogenous
d)
Salty
19.
Which is NOT a chemical change?
a)
Leaves changing colors in the fall
b)
Iron rusting
c)
Digesting Lunch
d)
Ice Melting
20.
This picture represents: 
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
21.
This picture represents: 
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
22.
This picture represents: 
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
23.
What type of mixture is this?
a)
homogenous mixture
b)
chemical
c)
heterogeneous mixture 
d)
solid mix
24.
Which of the following is an element?
a)
Sugar
b)
Salt
c)
Water
d)
Oxygen
25.
Which one of these pictures represents a pure substance? 
a)
1 and 2
b)
1 and 3
c)
2 and 3
d)
1, 2 and 3
26.
Which one of these pictures represents a mixture? 
a)
1
b)
2
c)
3
d)
1, 2 and 3
27.
The atomic number is the number of....
a)
neutrons
b)
protons
c)
electrons
d)
mass number
28.
The mass number is equal to the sum of 
a)
protons and neutrons 
b)
neutrons and electrons
c)
protons and electrons
d)
neutrons only
29.
A mixture that is so evenly mixed you can't see the parts.  Such as Kool-Aid
a)
Homogeneous Mixture
b)
Heterogeneous Mixture
c)
Pure Substance
30.
Electrons carry what charge? 
a)
neutral 
b)
negative
c)
positive
31.
Neutrons carry what charge? 
a)
neutral 
b)
negative
c)
positive
32.
In a neutral atom, the protons are always equal to the number of...
a)
electrons
b)
neutrons
33.
Locate Bromine on the periodic table, how many neutrons does Bromine have? Mass= protons + neutrons 
a)
80
b)
45
c)
35
d)
0
34.
Which element has 26 protons, 26 electrons, and 30 neutrons 
a)
Barium
b)
Zinc
c)
Helium
d)
Iron
35.
How many electrons are in a Li+ ion?
a)
1
b)
2
c)
3
d)
4
36.
How many electrons are in an S2- ion?
a)
10
b)
14
c)
16
d)
18
37.
How many electrons are in an S2- ion?
a)
10
b)
14
c)
16
d)
18
38.
How does a Br atom form a Br- ion?
a)
A bromine atom loses an electron.
b)
A bromine atom gains and electron.
c)
A bromine atom loses a proton.
d)
A bromine atom gains a proton.
39.
Potassium ion
a)
Na⁺
b)
K⁺
c)
K²⁺
d)
K⁻
40.
Aluminium ion
a)
Al²⁺
b)
Al³⁺
c)
Al⁺
d)
Al⁴⁺
41.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
42.
What quantities vary between isotopes of an element?
a)
protons, electrons, and atomic mass
b)
protons, electrons, and atomic number
c)
neutrons and electrons
d)
neutrons and atomic mass
43.
Which is an alkali metal?
a)
Magnesium
b)
Iron
c)
Sodium
d)
Europium
44.
B and C are found in the ______ of an atom.
a)
Energy levels
b)
Space
c)
Nucleus
d)
Outside
45.
Which box has a higher density?  
a)
Box A
b)
Box B
c)
cannot be determined
d)
they are the same
46.
Anything that has mass and takes up space is called
a)
volume
volume
b)
matter
c)
magnetism
d)
electricity
47.
An oreo cookie weighs 20 grams.  It gets crushed into crumbs for a recipe.  How much do its crumbs weigh?
a)
15 grams
b)
25 grams
c)
20 grams
48.
How many significant figures: 153.0 mL
a)
1
b)
2
c)
3
d)
4
49.
How many significant figures: 2016 m
a)
1
b)
2
c)
3
d)
4
50.
a)

6.5

b)

6.60

c)

6

d)

6.65

51.

The unit cm3 is used to express

a)

length

b)

mass

c)

volume

d)

time

52.
What is the length of this line?
a)
5 cm
b)
4.300 cm
c)
4.30 cm
d)
4.3 cm
53.
What line segment represents only the solid state?
a)
A-B
b)
B-C
c)
C-D
d)
D-E
54.

An increase in thermal energy causes:

a)

Particles to become more attracted to each other.

b)

Particles to become less attracted to each other.

c)

Particles to move faster.

d)

Particles to move slower.

55.

In the diagrams provided, the circles of different colors represent the atoms of different elements. Which diagram represents a mixture?

a)

I

b)

II

c)

III

d)

IV

56.

A block of solid gold is heated from -20 0C to 25 0C in five minutes using a hotplate. Which graph represents this situation?

a)

Graph A

b)

Graph B

c)

Graph C

d)

Graph D

57.
Aluminum has _ valence electrons. 
a)
7
b)
1
c)
6
d)
3
58.
Which units of measurement are used for volume?
a)
grams
b)
centimeters
c)
grams/milliliter
d)
milliliter
59.
Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
60.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
61.
What units are used to measure Density?
a)
cm3/g
b)
g
c)
g/cm3
d)
cm3
62.
What particle decides the identity of an atom/element?
a)
proton
b)
neutron
c)
electron
d)
All of the above.
63.
Which measurement would be the best for point B?
a)
2.5
b)
2.6
c)
2.58
d)
2.60
64.

Based on the data, which number shows the correct location of the element with 2 valence electrons and 3 energy levels.

a)

1

b)

2

c)

3

d)

4

65.

Based on the data, which number shows the correct location of the element with 2 valence electrons and 1 energy levels.

a)

1

b)

2

c)

3

d)

4

66.

Which pair of properties describe the elements in group 18

a)

They have 8 valence electrons and are very reactive

b)

They have 8 energy levels and are stable

c)

They are gases at room temperature and are stable

d)

They are gases at room temperature and very reactive.

67.

Which two elements on the periodic table are in the same group?

a)

Na and He

b)

O and C

c)

Li and Ne

d)

He and Ar

68.

Which two atoms are elements that belong in period two in the periodic table?

a)

Atom 3 and Atom 4

b)

Atom 1 and Atom 4

c)

Atom 3 and Atom 2

d)

Atom 1 and Atom 2

69.

Which two atoms are elements in the same group in the periodic table?

a)

Atom 3 and Atom 4

b)

Atom 1 and Atom 4

c)

Atom 3 and Atom 2

d)

Atom 1 and Atom 2

70.

Based on the data, which number shows the correct location of the element that is malleable and a good conductor.

a)

1

b)

2

c)

3

d)

4

71.

Which one of the following discoveries came first?

a)

electrons

b)

neutrons

c)

quarks

d)

atoms

72.

Which scientist discovered the electrons?

a)

Dalton

b)

Thomson

c)

Atristotle

d)

Bohr

73.

Rutherford and his students did experiments that showed

a)

quark

b)

nucleus

c)

proton

d)

electron

74.

Bohr discovered that electrons are located in

a)

the nucleus

b)

inside protons

c)

electron cloud

d)

circular orbits around the nucleus

75.

What is a particle with one negative charge called?

a)

electron

b)

proton

c)

quark

d)

neutron

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