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C5 - Equations, Acids and Alkali - Pre-test Questions

Total questions: 92

Worksheet time: 8hrs 40mins

Name
Class
Date
1.

Hydrogen

a)

Hy

b)

H

c)

Hr

d)

Hn

2.
Question Image

Match the following

a)
1.

Element

b)
2.

Compound

c)
3.

Mixture

d)
4.

Element

e)
5.

Compound

3.

Rocks and Sand

a)

Element

b)

Compound

c)

Mixture

4.

A(n)__ is a pure substance containing two or more kinds of atoms.

a)

Element

b)

compound

c)

mixture

d)

solution

5.

An element is a ___ that cannot be separated into simpler substances by physical or chemical means.

a)

pure substance

b)

mixture

c)

solution

d)

compound

6.

What is an element?

a)

A substance that is made up of one type of atom and can't be reduced to simpler substances.

b)

A substance made of two or more different atoms chemically bonded to one another. They can only be destroyed by chemical processes.

c)

A material containing two or more elements or compounds that are in close contact and are mixed in any proportion. They can be separated by physical means.

7.

Where can you find examples of Elements?

a)

Dictionary

b)

Periodic Table of Compounds

c)

Periodic Table of Elements

d)

Your Neighbor

8.

Select the correct answer

a)

Element

b)

Compound

9.

Select the correct answer

a)

Element

b)

Compound

10.

The letter, C, is a ... of carbon.

a)

Name

b)

Chemical Symbol

c)

Nickname

d)

Pseudonym

11.
C is the symbol for ____/
a)
copper
b)
carbon
c)
calcium
d)
chlorine
12.
Al is the symbol for ____.
a)
silver
b)
gold
c)
aluminum
d)
arsenic
13.

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.

14.
The reactants are on the left side of the chemical equation.
a)
True
b)
False
15.

How many atoms in all are in a molecule of serotonin?

C10H12N2O

a)
22
b)
24
c)
25
d)
4
16.
Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns?
a)
The shape of the coal changes
b)
Oxygen is present
c)
A new substance is produced
d)
Coal is made up of more than one element
17.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
18.
Is glass breaking a chemical or phyiscal change?
a)
chemical
b)
physical
19.
Is hammering wood together to build a house a chemical or physical change?
a)
chemical
b)
physical
20.
Is a a rusting bicycle a chemical or physical change?
a)
chemcial
b)
physical
21.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
22.
Is melting ice a chemical or physical change?
a)
chemical
b)
physical
23.
Is spoiling food a physical or chemical change?
a)
phyiscal
b)
chemical
24.
Is mixing lemonade powder with water a physical or chemical change?
a)
physical
b)
chemical
25.
Is mowing the lawn a phyiscal or chemical change?
a)
physical
b)
chemical
26.
What is the left part of a chemical equation called?
H2 + O → H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
27.
Is this balanced?
2HgO → 2Hg + O2
a)
Yes
b)
No
28.
Is this balanced?
Al + O2 → 2Al2O3
a)
Yes
b)
No
29.
When materials combine to form new compounds it is a chemical change. Which example is a chemical change?
a)
baking powder fizzing
b)
water boiling
c)
ice melting
d)
sugar cube dissolving
30.
Which is an example of a chemical reaction?
a)
paper cut into small pieces
b)
chocolate melting in a pan
c)
flour and sugar mixed in a bowl
d)
cookies baking in an oven
31.
The substances listed on the right side of a chemical equation are the
a)
Yields
b)
Reactants
c)
Products
d)
Precipitates
32.

The process by which one or more substances change to produce one or more different substances

a)

Chemical Process

b)

Reactant

c)

Chemical Reaction

33.
What are Chemical Reactions?
a)
It's when you mix substances.
b)
a process in which atoms rearrange to form new substances
c)
When something bubbles.
d)
letter and numbers showing the types and number of atoms
34.

Determined whether the following equation is balanced or unbalanced. Ag + O2 ---> 2Ag2O

a)

Balanced

b)

Unbalanced

35.

In order for an equation to be balanced, there must be ...

a)

an equal amount of atoms on both sides

b)

a greater mass on the product side

c)

a greater mass on the reactant side

d)

elements with the same atomic # on both sides

36.
Which factors increase the rate of a reaction.
a)
increasing temperature
b)
increasing concentration
c)
increasing surface area
d)
all of these
37.

During a reaction, atoms are

a)

created

b)

destroyed

c)

neither created or destroyed - just rearranged

38.

Is a copper penny turning greenish after a few years a chemical or physical change?

a)

Chemical Change

b)

Physical Change

39.

How would you describe this chemical formula?

3O

a)

3 Oxygen molecules

b)

3 Oxygen atoms

c)

3 Oxygen elements

d)

3 Oxygen compounds

40.

How would you describe this chemical formula?
3 H2O

a)

3 H2O molecules

b)

3 H2O atoms

c)

3 H2O elements

d)

3 H2O parts

41.

A chemical reaction is when...

a)

Atoms and molecules are destroyed

b)

Atoms and molecules are created

c)

Atoms and molecules break apart and regroup to form new products

d)

Atoms and molecules go on vacation and relax a little

42.

What does the pH scale measure?

a)

The strength of acids and alkalis

b)

The colour of a substance

43.

What is the pH of a neutral solution?

a)

1

b)

5

c)

7

d)

9

e)

14

44.

A liquid has a pH of 1. What type of liquid is it?

a)

Acid

b)

Neutral

c)

Alkaline

45.

What colour does Universal Indicator go in a liquid with a pH of 11?

a)

Red

b)

Yellow

c)

Green

d)

Purple

e)

Blue

46.

What colours does Universal Indicator go in strongly acids?

a)

Red

b)

Purple

c)

Green

d)

Blue

47.

The image shows a PH scale. Which option indicates strong alkali?

a)

a

b)

b

c)

c

d)

d

48.

The image shows a PH scale. Which option indicates strong acid?

a)

a

b)

b

c)

c

d)

d

49.

What is the substance with a neutral pH of 7?

a)

Milk

b)

Water

c)

Orange Juice

d)

Blood

50.

Which substance is acid?

a)

Ammonia

b)

Toothpaste

c)

Vinegar

d)

Soap

51.

Alkalis feel...

a)

Rough

b)

Soapy

c)

Granulated

d)

Smooth

52.

What is the meaning of the word 'acid'?

a)

Sour

b)

Bitter

c)

The ashes

d)

burn

53.

These house hold items were made of ____________.

a)

acids

b)

alkalis

54.

A purple colour when using universal indicator indicates the solution is _______________.

a)

neutral

b)

acidic

c)

alkali

d)

blackcurrant juice

55.

An alkali is able to “cancel” out an acid. This process is also known as?

a)

balancing

b)

extraction

c)

overcome

d)

neutralisation

56.

What happens to the pH of an acid during neutralisation?

a)

It stays the same

b)

It moves toward pH 1

c)

It moves towards pH 7

d)

It moves towards pH 14

57.

Which substance is an acid?

a)

Water

b)

Bleach

c)

Orange juice

d)

Washing powder

58.

Complete the word equation below:

Acid + alkali --> ............... + water

a)

water

b)

salt

c)

gold

d)

metal

59.

.............................. + sodium hydroxide --> sodium chloride + water

a)

Nitric acid

b)

Sulphuric acid

c)

Hydrochloric acid

d)

Ethanoic acid

60.

Why is toothpaste alkaline?

a)

It can neutralise strong alkaline in

your mouth

b)

It can neutralise acid in

your mouth

c)

It can refresh your teeth

d)

Toothpaste is not alkaline.

61.
Pure water has a pH of 7. Pure water _______.
a)
is a base
b)
is a neutral substance
c)
could be either an acid or a base
d)
is an acid
62.

What colour is Universal indicator when the solution is neutral?

a)

Red

b)

Green

c)

Blue

d)

Purple

63.

What type of reaction occurs when you react an acid with an alkali?

a)

combustion

b)

decomposition

c)

no reaction

d)

neutralisation

64.

Sulphuric acid + potassium hydroxide --> ........................ + water

a)

potassium sulphate

b)

potassium sulphurate

c)

potassium nitrate

d)

magnesium hydroxide

65.

Lithium hydroxide + nitric acid ->

a)

Lithium nitrate + hydrogen

b)

Lithium nitride + salt

c)

Lithium nitrate + water

d)

Lithium nitrate + hydroxide

66.

Magnesium hydroxide + hydrochloric acid -> water + ..............

a)

magnesium chloride

b)

magnesium oxide

c)

magnesium oxygen

d)

magnesium chlorine

67.

nitric acid + iron hydroxide -> iron nitrate + ..........

a)

hydrogen

b)

hydroxide

c)

oxygen

d)

water

68.

iron chloride, sodium nitrate, lithium sulphate, copper carbonate are all examples of .........

a)

acids

b)

alkalis

c)

salts

d)

mixtures

69.

Which substance is used to prove that an unknown gas is carbon dioxide?

a)

a glowing splint

b)

hydrogen gas

c)

plain drinking water

d)

lime water

70.
a)

Antacid pil

b)

Fertilizer

c)

car battery

d)

Pickle

71.

Excess acids in stomach can be neutralized using ............

a)

antacid

b)

vinegar

c)

slaked lime

d)

hydrochloric acid

72.

Which substance is used to prove that an unknown gas is carbon dioxide?

a)

a glowing splint

b)

hydrogen gas

c)

plain drinking water

d)

lime water

73.

How to test the presence of Oxygen?

a)

Use lime water

b)

Use glowing wooden splinter

c)

Use burning wooden splinter

d)

Use litmus paper

74.

Metals and acids react to form .....

a)

Salt and hydrogen

b)

Salt and water

c)

Carbon dioxide, salt and water

d)

Hydrogen only

75.

What is the test for carbon dioxide produced from a reaction?

a)

the burning splint test

b)

the glowing splint test

c)

bubbling the gas through limewater

76.

Metal carbonates react with acid to form....

a)

Salt, carboxylic acid and water

b)

Salt, carbon dioxide and water

c)

Salt and carbonated water

d)

Salt and hydrogen

77.

The two tests for carbon dioxide are ...

a)

It will extinguish a lit splint

b)

It will cause a squeaky pop

c)

It will explode

d)

When bubbled through lime water it turns the water cloudy

78.

What gas is always produced when carbonates reacts with acids?

a)

Oxygen

b)

Hydrogen

c)

Carbon dioxide

d)

Nitrogen

79.
OH-
a)
hydronium
b)
hydroxide
80.
NO3-
a)
nitrate
b)
nitrite
81.
SO42-
a)
sulfate
b)
sulfite
82.
PO43-
a)
phosphate
b)
phosphorus oxide
83.
CO32-
a)
carbon oxide
b)
carbonate
84.
What is the name of this polyatomic ion?  CO3-2
a)
Carbonate
b)
Chromate
c)
Carbonite
d)
Chlorate
85.

Calcium Hydroxide

a)

Ca(OH)

b)

CaH2

c)

Ca(OH)2

86.

Match the following substances to their correct group.

a)

sulphuric acid

1.

acid

b)

sodium hydroxide

2.

alkali

c)

sodium chloride

3.

salt

d)

carbon

4.

element

e)

ethanol

5.

solvent

87.

Match the substance to its chemical test.

a)

oxygen

1.

rekindles a glowing spill

b)

hydrogen

2.

burns explosively in air

c)

carbon dioxide

3.

turns limewater chalky

88.

copper oxide + sulphuric acid ---> copper sulphate + water

a)

a displacement reaction

b)

a thermal decomposition reaction

c)

a neutralisation reaction

d)

a combustion reaction

89.

Name the compound formed from the following elements:

sulfur, iron

(a)  

90.

Reactivity (bubbling, fizzing) is a --- property.

a)

Chemical

b)

Physical

91.

Bubbles produced as in the yeast and peroxide demonstration is an example of a --- property.

a)

Chemical

b)

Physical

92.

what are some clues that tell you it's a chemical reaction?

a)

hair salons

b)

exploding, stirring, and cutting

c)

bubbling, fizzing, melting, rusting

d)

all of the above

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