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8ME end of year quiz

Total questions: 89

Worksheet time: 1hrs 21mins

Name
Class
Date
1.

When we investigate the rate of reaction we are looking at the...

a)

amount of product formed

b)

speed of reaction

c)

concentration of reacting particles

d)

combining reactants with products

2.
Which factors increase the rate of a reaction.
a)
increasing temperature
b)
increasing concentration
c)
increasing surface area
d)
all of these
3.

Increase in temperature of the reactants can do one of the following

a)

Slow collision frequency

b)

Allow less effective collision between the particles

c)

increase collision between the particles thus increasing the rate.

4.
Why does a catalyst increase the rate of reaction?
a)
it produces extra energy for the reactants
b)
it increases the speed of the reactant particles
c)
it increases the frequency of particle collisions
d)
it reduces the activation energy of the reaction 
5.
Which of the following increase the reaction rate?
a)
less surface area
b)
lower temperature
c)
an inhibitor
d)
increased concentration
6.
Why don't all collisions between particles cause a reaction?
a)
the particles also need to collide with a catalyst
b)
not all the particles collide with enough energy
c)
not all the particles collide at a high enough temperature
d)
the particles need to collide with each other twice
7.
Why does a higher temperature increase the rate of a reaction?
a)
it increases both the frequency and energy of particle collisions
b)
it only increases the frequency of particle collisions
c)
it only increases the energy of particle collisions
d)
it reduces the activation energy of the reaction
8.

How could we make this reaction happen more quickly?

a)

Decrease the concentration of the acid

b)

crush the chalk to increase the surface area

c)

Put the test tube in an ice bath

9.

Creating fossils is a very _____ chemical reaction

a)

Fast

b)

Slow

c)

It is not a chemical reaction

10.

The major theory of reaction rate is called

a)

Collision theory

b)

Crash theory

c)

Newton's laws

d)

Thermodynamics

11.

When surface area is decreased the rate of reaction...

a)

Decreases, because there are LESS possible sites for correct collisions

b)

Increases, because there are LESS possible sites for correct collisions

c)

Decreases, because there are MORE possible sites for correct collisions

d)

Increases, because there are MORE possible sites for correct collisions

12.
Ice melting
a)
Chemical Change
b)
Physical Change
13.
Wood burned in a fireplace
a)
Chemical Change
b)
Physical Change
14.
Cake batter baked in an oven
a)
Chemical Change
b)
Physical Change
15.
Baking soda and vinegar combine to make carbon dioxide
a)
Chemical Change
b)
Physical Change
16.
Copper roof changing color
a)
Chemical Change
b)
Physical Change
17.
Rust on an iron fence
a)
Chemical Change
b)
Physical Change
18.
Boiling water
a)
Chemical Change
b)
Physical Change
19.
What happens in ALL chemical changes?
a)
Change in state of matter
b)
A new substance is formed
c)
Bubbles are produced
d)
An explosion
20.

Which group of the periodic table are alkali metals found in?

a)

Group 1

b)

Group 2

c)

Group 7

d)

Group 8

21.

Which of the followings is the most reactive alkali metal in water?

a)

Lithium

b)

Sodium

c)

Potassium

d)

Hydrogen

22.

What is formed when sodium reacts with water?

a)

Sodium oxide and hydrogen

b)

Sodium hydroxide and hydrogen

c)

Sodium hydroxide and oxygen

d)

Sodium hydroxide and carbon dioxide

23.

What is the symbol equation for the reaction between Potassium and water?

a)

2K + 2H2O → 2KOH + H2

b)

2Na + 2H2O → 2NaOH + H

c)

2K + H2O → 2KOH + CO2

d)

2Na + 2H2O → 2NaOH + CO2

24.

Which of the followings is not an alkali metal?

a)

Li

b)

Cl

c)

K

d)

Cs

25.

How many electrons do the alkali metals have in their outer most shell?

a)

1

b)

2

c)

8

d)

7

26.

What happens to the melting point of the alkali metals as you move down the group?

a)

decreases

b)

increases

c)

no change

d)

first increases than decreases

27.

Which alkali metals is the least reactive?

a)

Lithium

b)

Sodium

c)

Potassium

d)

Rubidium

28.

Which alkali metal has the lowest natural abundance (existence)?

a)

Francium

b)

Rubidium

c)

Potassium

d)

Sodium

29.

Alkali are so reactive to air. Because of that they are generally stored in ......

a)

water

b)

oil

c)

vaults

d)

cotton

30.

.................. is released when alkali metals react with water.

a)

Hydrogen

b)

Oxygen

c)

Metahne

d)

Carbon dioxide

31.

What kind of solution is produced when group 1 metals react with water?

a)

Neutral

b)

Acidic

c)

Alkaline

d)

Ionized

32.

What colour do the alkali metals turn the universal indicator when they are added to the water?

a)

Orange

b)

Red

c)

Blue/purple

d)

Green

33.

What does the "thermal" in thermal decomposition mean?

a)

sulfur

b)

catalyst

c)

heat

d)

oven

34.

What happens when CO2 is bubbled through limewater

a)

It changes from pink to blue

b)

It goes pop

c)

It goes cloudy

d)

It gets hot

35.

______________ (+ heat) → zinc oxide + carbon dioxide

a)

zinc carbonate

b)

zinc oxide

c)

zinc dioxide

d)

zinc hydrogen carbonate

36.

Why does thermal decomposition need heat energy

a)

to make magic

b)

to break bonds

c)

to make water

d)

to work as a catalyst

37.
A decomposition reaction can be represented as _____________________.
a)
AB  → A + B
b)
A + B → AB
c)
AB + CD → AC + BD
d)
A + BC → B + AC
38.
What is decomposition?
a)
putting substances together
b)
breaking substances apart
c)
element replacing another element in a compoud
d)
burning of a subtance
39.

Which of the following is MOST reactive?

a)

Magnesium

b)

Lead

c)

Tin

d)

Copper

e)

Zinc

40.

Which metal is more reactive than calcium?

a)

magnesium

b)

potassium

c)

silver

d)

aluminum

41.

Choose the least reactive metal

a)

calcium

b)

magnesium

c)

iron

d)

copper

42.

What does displacement mean?

a)

A chemical reaction where a less reactive metal takes the place of a more reactive metal in a compound.

b)

A chemical reaction where a more reactive metal takes the place of a less reactive metal in a compound.

c)

A more reactive metal is removed from a compound.

43.

Magnesium chloride + Sodium → ?

a)

Sodium chloride + Magnesium

b)

Magnesium chloride + Sodium (No change)

c)

Sodium magnesium + Chlorine

44.

Lithium chloride + Iron → ?

a)

Lithium chloride + Iron (No change)

b)

Iron chloride + Lithium

c)

Lithium oxide + hydrogen

45.

Zinc sulphate + Magnesium → ?

a)

Magnesium + Sulphur + Hydrogen

b)

Zinc sulphate + Magnesium

c)

Magnesium sulphate + Zinc

46.

Iron nails + copper oxide → ?

a)

Iron nails + copper oxide

b)

Iron oxide + copper oxide

c)

Iron oxide + copper

d)

Magic

47.
When scrap iron is added to blue copper sulphate solution, a pinky-brown deposit is formed and a pale green solution is left above it. The pale green solution is of?
a)
 iron oxide
b)
copper chloride
c)
sulphuric acid
d)
iron sulphate
48.
Which of the following will not undergo reaction?
a)
zinc metal  +  zinc oxide 
b)
iron metal  +  copper oxide
c)
zinc metal +  iron oxide
d)
magnesium  +  iron oxide
49.
When a metal reacts with oxygen gas, the product is ...
a)
metal hydroxide
b)
metal oxide
c)
metal oxide and oxygen
d)
metal hydroxide and hydrogen gas
50.

This type of combustion occurs when there is a limited supply of oxygen

a)

Complete Combustion

b)

Incomplete Combustion

51.
Another term for burning is
a)
Fire triangle
b)
Magnesium oxide
c)
Combustion
d)
Bustion
52.

Hydrocarbon fuel + oxygen ----> ___+____

(Select 2)

a)

CO2

b)

O2

c)

H2O

d)

CxHy

53.

Incomplete combustion is harmful to humans because it ___________________.

a)

increases the level of sugar in the blood

b)

produces large amounts of carbon dioxide

c)

decreases the amount of sugar in the blood

d)

produces carbon monoxide that reduces the level of oxygen in the blood

54.
The condition which are required for combustion to take place are:
a)
fuel
b)
ignition temperature
c)
oxygen
d)
all of these
55.
Is combustion a reversible reaction?
a)
Yes.
b)
No.
56.
Which of these is NOT an essential part of fire.
a)
Fuel.
b)
Friction.
c)
Heat.
d)
Oxygen.
57.
The word equation for combustion is: fuel + oxygen --> water + ________ __________
a)
Carbon dioxide
b)
Limewater
58.

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

a)

groups

b)

towers

c)

periods

d)

atomic numbers

59.
The Modern Periodic Table of Elements is arranged by
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
60.
Sodium (Na) is found in period 
a)
3
b)
2
c)
4
d)
1
61.
Sodium (Na) is found in group 
a)
1
b)
2
c)
3
d)
4
62.
The atomic number tells you what?  READ THE ANSWERS CAREFULLY
a)
only the number of electrons
b)
 only the number of protons
c)
only the number of neutrons
d)
the number of both electrons and protons in an atom.
63.
What does the atomic mass tell you? 
a)
Basically,the number of electrons and protons
b)
The number of neutrons
c)
Basically, the number of protons and neutrons
d)
The number of protons.
64.
What does the 6 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
65.

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

a)

groups

b)

families

c)

periods

d)

atomic numbers

66.

period

a)

Elements that occur in vertical columns on the periodic table.

b)

A horizontal row of elements in the periodic table

c)

Found in group two of the periodic table; highly reactive

d)

A subatomic particle that has a negative charge

67.

A subatomic particle that has a positive charge and that is found in the nucleus of an atom

a)

Proton

b)

elecrtron

c)

groups

d)

neutrons

68.

A subatomic particle that has a negative charge

a)

nobles gases

b)

protons

c)

electrons

d)

neutrons

69.
The atomic number of this pictured element is
a)
28
b)
58.6934
c)
Ni
d)
Nickel
70.
What is the atomic mass of Neon?
a)
10
b)
30
c)
10.18
d)
20.18
71.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
72.

Who invented the Periodic Table?

a)

Mendeleev

b)

Bohr

c)

Lewis

d)

Democritus

73.

As you move left to right on a row or period what happens?

a)

Atomic number increases by 1

b)

Electrons decrease

c)

Number of shells decrease

d)

Nothing

74.

Mendeleev's genius was his ability to

a)

predict elements that were not discovered yet

b)

organize elements by their mass

c)

had an element named after himself

d)

organize elements by properties

75.

Valence means......

a)

inside

b)

outside

c)

full

76.

Rows on the periodic table are called ___________.

a)

Periods

b)

Sentences

c)

Fences

77.

The columns in the periodic table are called ___________.

a)

Towers

b)

Herds

c)

Groups

78.

Elements in the same group have __________

a)

Similar Properties

b)

Same number of shells

c)

Similar Mass

79.
Metals that can be used as wire are ____________.
a)
metallic
b)
shiny
c)
malleable
d)
ductile
80.
When an object changes shape when struck by a hammer.
a)
luster
b)
malleable
c)
brittleness
d)
ductile
81.
Good conductor of heat
a)
Metal
b)
Nonmetal
82.
Which of these is a property of metals?
a)
It's malleable
b)
It can't conduct electricity
c)
They are used in food
d)
It's very brittle
83.
Which elements are found on the left to middle of The Periodic Table? 
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Candles
84.
Describe what luster means
a)
How an object reflects light
b)
How soft an object is
c)
If an object floats
d)
If an object can be dug out of the earth.
85.

Which of the following is the only metal that exist as a liquid at room temperature?

a)

Gold (Au)

b)

Mercury (Hg)

c)

Titanium (Ti)

86.

Argon is a ____________ at room temperature.

a)

Gas

b)

Liquid

c)

Solid

87.
What two conditions make iron rust
a)
Water only
b)
air only
c)
water and air
d)
Hydrochloric acid
88.

To test for hydrogen you....

a)

use a lit splint

b)

use a glowing splint

c)

add anhydrous copper sulphate

d)

bubble the gas through limewater

89.

The positive result for a lit splint test......

a)

gives a squeaky pop

b)

turns cloudy

c)

the splint relights

d)

the splint goes out

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