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Unit Review - Chemistry Part 1

Total questions: 115

Worksheet time: 6hrs 45mins

Name
Class
Date
1.

What are the three main groups of the periodic table?

a)

groups

b)

metal

c)

nonmetals

d)

metalloids

e)

periods

2.

Which of the following elements is a non-metal in group 14?

a)

Carbon (C)

b)

Silicon (Si)

c)

Tin (Sn)

d)

Lead (Pb)

3.

Which two elements are in the same period?

a)

boron (B) and lithium (Li)

b)

beryllium (Be) and calcium (Ca)

c)

phosphorus (P) and oxygen(O)

d)

boron (B) and phosphorus (P)

4.

Metals are located on the

________ side of the

Periodic Table.

a)

ZIG-ZAG

b)

LEFT

c)

RIGHT

d)

BOTTOM

5.

What are the three particles that make up the atom?

a)

protons, neutrons and isotopes

b)

protons, negatives and electrons

c)

neutrons, isotopes and electrons

d)

protons, neutrons and electrons

6.

An element with a mass number of 10 and an atomic number of 6 has how many neutrons?

a)

6

b)

8

c)

4

d)

10

7.

What does a represent?

a)

Proton

b)

Neutron

c)

Electron

8.

How many valence (outer) electrons does an Oxygen atom have?

a)

2

b)

6

c)

8

d)

16

9.

What does the Bohr Model represent?

a)

The structure of molecules

b)

The structure of the Solar System

c)

The structure of an atom

d)

The structure of East Hills

10.

In the molecule C6H12O6, how many hydrogen atoms are there?

a)

1

b)

6

c)

12

d)

24

11.

How many energy levels does this element have?

a)

6

b)

2

c)

4

d)

5

12.

This is a correct dot diagram for neon (Ne)

a)

true

b)

false

13.

which is the odd one out : PRODUCTS , REACTANTS , PLUS SIGN , ARROW , MINUS SIGN

a)

PRODUCTS

b)

REACTANTS

c)

PLUS SIGN

d)

ARROW

e)

MINUS SIGN

14.

products are always written on the

a)

right hand side

b)

left hand side

c)

middle

d)

none

15.

What does b represent?

a)

Proton

b)

Neutron

c)

Electron

16.

What does c represent?

a)

Proton

b)

Neutron

c)

Electron

17.

What is the atomic mass of this element?

a)

20

b)

60

c)

40

d)

41

18.

What is the symbol of this element?

a)

Calcium

b)

P

c)

Ca

d)

C

19.

protons

a)

negative charge, nucleus

b)

positive charge, shells

c)

positive charge , nucleus

d)

neutral charge, nucleus

20.

neutrons

a)

no charge, shells

b)

positive charge, nucleus

c)

neutral, no charge, nucleus

d)

negative charge, shells

21.

electrons

a)

no charge, nucleus

b)

positive charge, nucleus

c)

negative charge, shells

d)

negative charge, nucleus

22.
The characteristics or properties of metals include
a)
shiny and solid
b)
ductile and malleable
c)
lose electrons
d)
all of the above
23.
Which particle contributes the negative charge to the atom?
a)
proton
b)
electron
c)
neutron
d)
nucleus
24.
Water is an element?
a)
true
b)
false
25.
Gold is an example of a(n) 
a)
pure element
b)
pure compound
c)
pure mixture
26.

What is the number of protons that the element in this image contain?

a)

14

b)

7

c)

15

d)

18

27.
"C" is the element symbol for which element?
a)
calcium
b)
carbon
c)
chlorine
d)
cadmium
28.

True or False? Neutrons have a negative charge

a)

True

b)

False

29.
A _________ is a substance made of two or more DIFFERENT elements chemically combined. 
a)
mixture
b)
compound
c)
substance 
30.
A mixture can be separated by ________ means. 
a)
physical
b)
chemical
31.

What is the atomic number of this element?

a)

20

b)

60

c)

40

d)

41

32.

An electron is

a)

positively charged

b)

neutral

c)

negatively charged

33.

atomic number is

a)

the number of protons

b)

the number of electrons

c)

the number of neutrons

d)

the location of an atom on the periodic table

34.

Atomic Mass is the number of

a)

protons and neutrons in the nucleus of an atom

b)

protons and electrons in the nucleus of an atom

c)

neutrons and electrons in the nucleus of an atom

35.

Conservation of mass means

a)

all the atoms present before a chemical reaction are not present after

b)

atoms present before chemical reactions are present after

c)

new substances and new elements are formed in a chemical reaction

36.

An elements is

a)

a substance that cannot be split into simpler substances

b)

a substance that can be split into simpler substances

37.

A molecule is

a)

a singular particle of a particular element

b)

another name for an element

c)

2 or more atoms that are combined

38.

which of the statements on physical changes are correct

a)

A physical change in certain situations can be reversed

b)

A physical change is a change in state

c)

A physical change is a change in form

d)

A physical change is where new substances are formed

39.

Signs of a chemical change include;

a)

change of colour, change of temperature, precipitate (solid) formed, gas released.

b)

change of colour, reversing back to original form, precipitate (solid) formed, gas released.

40.

Water is the product of the reactants:

a)

oxygen and water

b)

oxygen and carbon

c)

hydrogen and oxygen

41.

The type of reaction that releases energy as heat is called

a)

endothermic

b)

exothermic

c)

respiration

d)

photosynthesis

42.

which of the following are the characteristics of a chemical reaction (choose multiple answers)

a)

change of state

b)

change of colour

c)

change of precipitation

d)

formation of a new product

e)

change of smell

43.

when a substance does not undergo a chemical reaction is known as a chemical change

a)

true

b)

false

44.

the chemical reactions which proceed with the release _________ are called _______________________________

a)

heat energy , endothermic reaction

b)

heat energy , exothermic reaction

c)

light energy , endothermic reaction

d)

light energy , exothermic reaction

45.

on which side are the reactants written

a)

left hand side

b)

right hand side

c)

middle

d)

nowhere

46.

a chemical equation that represents a chemical reaction briefly in words is called chemical equation

a)

true

b)

false

c)

cant tell

d)

none

47.
an atom with atomic number 6 would have how many protons 
a)
6
b)
12
c)
3
d)
cannot be determined 
48.
a)
Neutrons = Mass Number + Atomic Number
b)
Neutrons = Mass Number - Atomic Number
c)
Neutrons = Atomic Number + Electrons
d)
Neutrons = Atomic Number - Electrons
49.
a)
Mass Number = Atomic Number + Neutrons
b)
Mass Number = Atomic Number - Neutrons
c)
Mass Number = Atomic Number + Electrons
d)
Mass Number = Atomic Number - Electrons 
50.
a)
Electrons that are inside the nucleus
b)
Electrons on the outermost energy level 
c)
Electrons that are closest to the nucleus
d)
Electrons that have a positive charge
51.
a)
Number of protons
b)
Number of neutrons
c)
Number of electrons
d)
Mass Number
52.
a)
The number of protons
b)
The number of neutrons
c)
The Mass Number
d)
The number of valence electrons
53.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
54.
What is the atomic mass of "F"
a)
9
b)
18
c)
17
d)
19
55.
The particles that are found in the nucleus of an atom are
a)
neutrons and electrons
b)
electrons only
c)
protons and neutrons
d)
protons and electrons
56.
Where are electrons of an atom found?
a)
Nucleus
b)
Electron Cloud
c)
Some are in the nucleus and some in the electron cloud.
d)
They are moving everywhere.
57.

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

a)

groups

b)

towers

c)

periods

d)

atomic numbers

58.
The Modern Periodic Table of Elements is arranged by
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
59.

The horizontal (side to side) rows in the Periodic Table are called

a)

groups

b)

families

c)

periods

d)

atomic numbers

60.

What are the three main groups of the periodic table?

a)

groups

b)

metal

c)

nonmetals

d)

metalloids

e)

periods

61.

Which of the following elements is a non-metal in group 14?

a)

Carbon (C)

b)

Silicon (Si)

c)

Tin (Sn)

d)

Lead (Pb)

62.

Which two elements are in the same period?

a)

boron (B) and lithium (Li)

b)

beryllium (Be) and calcium (Ca)

c)

phosphorus (P) and oxygen(O)

d)

boron (B) and phosphorus (P)

63.

Metals are located on the

________ side of the

Periodic Table.

a)

ZIG-ZAG

b)

LEFT

c)

RIGHT

d)

BOTTOM

64.

Find the element on Period 3 and Group 17. What is

this element’s chemical symbol?

a)

F

b)

Br

c)

Cl

d)

I

65.
Oxygen’s atomic number is 8. This means that an oxygen atom must have
a)
8 electrons
b)
8 protons
c)
8 neutrons
d)
a mass number of 8
66.
How many electrons are in the element, Oxygen, with the atomic number of 8?
a)
7
b)
10
c)
8
d)
9
67.

What are the three particles that make up the atom?

a)

protons, neutrons and isotopes

b)

protons, negatives and electrons

c)

neutrons, isotopes and electrons

d)

protons, neutrons and electrons

68.

An element with a mass number of 10 and an atomic number of 6 has how many neutrons?

a)

6

b)

8

c)

4

d)

10

69.

What does a represent?

a)

Proton

b)

Neutron

c)

Electron

70.

How many valence (outer) electrons does an Oxygen atom have?

a)

2

b)

6

c)

8

d)

16

71.

What does the Bohr Model represent?

a)

The structure of molecules

b)

The structure of the Solar System

c)

The structure of an atom

d)

The structure of East Hills

72.

In the molecule C6H12O6, how many hydrogen atoms are there?

a)

1

b)

6

c)

12

d)

24

73.

How many energy levels does this element have?

a)

6

b)

2

c)

4

d)

5

74.

This is a correct dot diagram for neon (Ne)

a)

true

b)

false

75.

which is the odd one out : PRODUCTS , REACTANTS , PLUS SIGN , ARROW , MINUS SIGN

a)

PRODUCTS

b)

REACTANTS

c)

PLUS SIGN

d)

ARROW

e)

MINUS SIGN

76.

products are always written on the

a)

right hand side

b)

left hand side

c)

middle

d)

none

77.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 
a)
1
b)
2
c)
3
d)
4
78.
Which problem is balanced?
(Check ALL answers)
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
79.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction. 
80.
What is the left part of a chemical equation called?
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
81.
What is the right part of a chemical equation called...
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
82.
What is the total number of atoms present in 5Na3PO4
a)
5
b)
40
c)
55
d)
8
83.
Is the following equation balanced?
2C2H2 + 5O2 --> 4CO2 + 2H2O
a)
yes
b)
no
84.
Is the following equation balanced?
4Fe + 3O2 --> 2Fe2O3
a)
yes
b)
no
85.
Is the following reaction balanced?
NaHCO3 --> Na2CO3 + H2O + CO2
a)
yes
b)
no
86.
Is the following reaction balanced?
2CH3OH + 3O2 --> 2CO2 + 4H2O
a)
yes
b)
no
87.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number in front of a chemical formula.
c)
The number in between the chemical symbols.
d)
The number behind a chemical formula.
88.
What is the part of the chemical equation in green called? 
Fe + S --> FeS
a)
products
b)
reactants
c)
yield
d)
chemical formula
89.
What is the little number after an element in a chemical equation called.
Example: H2
a)
Coefficient 
b)
Subscript
c)
Atom
d)
Equation
90.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
91.
Element or compound?
H2O
a)
element
b)
compound
92.
How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
93.
Is this balanced?
Al + O2 → 2Al2O3
a)
Yes
b)
No
94.

Is the equation balanced?: 2H2O + O2 --> 4MgO + 3Fe

a)

yes

b)

no

95.

Balance this equation

_Al +_HCl --> _H2 +_AlCl3

a)

2,6,3,2

b)

it's already balanced

c)

4,12,3,4

d)

2,1,4,5

96.

What is the Law of Conservation of Mass?

a)

It states that matter cannot be created or destroyed.

b)

It states that energy cannot be created or destroyed.

c)

It states that matter can be created or destroyed.

d)

It states that sound can be created or destroyed.

97.
When iron nails get rusty, heat is released.  What process is this?
a)
Exothermic
b)
Endothermic
98.

_____ reactions usually feel hot!

a)

endothermic

b)

exothermic

99.

What type of reaction occurs in a hand warmer?

a)

exothermic

b)

endothermic

100.
In an exothermic reaction, heat is ...
a)

absorbed

b)

released

101.

In an endothermic reaction, heat is ...

a)

absorbed

b)

released

102.

An endothermic reaction occurs in a beaker. If we touched the beaker, it would most likely feel _______. 

a)
Warm
b)
Cold
103.
If a chemical reaction is EXOTHERMIC, the temperature would....
a)
Stay the same
b)
Increase
c)
Decrease
104.
What type of reaction is shown in the photo?
a)
Exothermic
b)
Endothermic
105.
Baking bread and cooking an egg are examples of....?
a)
Endothermic processes
b)
Exothermic processess
106.

Which of the following is an example of an Exothermic Reaction?

a)

ice melting

b)

Plants making sugar through photosynthesis

c)

water freezing into ice

107.

When barium hydroxide and ammonium chloride react, the temperature of the mixture decreases. What kind of reaction is this?

a)

Endothermic

b)

Exothermic

108.

When calcium reacts with water, the temperature changes from 18°C to 39°C. Which statement is correct?

a)

The reaction is exothermic

b)

The reaction is endothermic

109.

Is this diagram showing an endothermic or exothermic reaction?

a)

Endothermic

b)

Exothermic

110.

Solid --> liquid --> gas is what type of reaction?

a)

endothermic

b)

exothermic

111.

You freeze juice to make ice pops.

a)

exothermic

b)

endothermic

112.

A sunflower makes food during photosynthesis.

a)

exothermic

b)

endothermic

113.

A school bus burns gasoline while delivering students to school.

a)

exothermic

b)

endothermic

114.

You place raw cookie dough in the hot oven so the dough will cook. What part of this scenario is the SYSTEM?

a)

bowl you mixed the dough in

b)

hot oven

c)

cookie dough

115.

CO2 + H2O + energy --> O2 + glucose

The above chemical equation is ________

a)

Exothermic

b)

Endothermic

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