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Level 1 Acids and Bases

Total questions: 40

Worksheet time: 44mins

Name
Class
Date
1.

Highly acidic solutions have a pH closer to...

a)

7

b)

1

c)

14

d)

9

2.

A pH level of 7 indicates

a)

acid

b)

base

c)

neutral

d)

none of the following

3.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
4.

What is the only substance with a neutral pH of 7?

a)

Milk

b)

Orange Juice

c)

Pure water

d)

Bleach

5.

Slightly basic solutions have a pH closer to...

a)

8

b)

0

c)

14

d)

4

6.

Which property is not associated with acids?

a)

Sour taste

b)

strong acids can burn you

c)

turns litmus paper blue

d)

reacts with metals

7.

What type of paper is used to test for acids and bases?

a)

Red paper

b)

Blue paper

c)

Lined paper

d)

Litmus paper

8.

Tastes sour

a)

Acids

b)

Bases

c)

None of the following

d)

Acids & Bases

9.
If you neutralize an acid with a base what will be produced?
a)
Sugar and water
b)
Sugar and salt
c)
Salt and water
d)
Water
10.

Forms hydrogen ions (H+) in water.

a)

Acids

b)

Bases

c)

All

11.
BASE + ACID ----> SALT +?
a)
water
b)
oxygen
c)
hydrogen ion
d)
hydroxide ion
12.

Forms hydroxide ions (OH-) in water.

a)

Acids

b)

Bases

c)

All

13.

A substance is found to have the following characteristics:


Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water


In what category would the substance be classified?

a)

acid

b)

base

c)

enzyme

d)

fatty acid

14.

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

a)

Nitric acid

b)

Sulphuric acid

c)

Hydrochloric acid

d)

Ethanoic acid

15.

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

a)

potassium sulphate

b)

kalium sulphurate

c)

potassium nitrate

d)

magnesium hydroxide

16.

What type of reaction occurs when you react an acid with a base (an alkali)?

a)

combustion

b)

decomposition

c)

no reaction

d)

neutralisation

17.

What colour is Universal indicator when the solution is neutral?

a)

Red

b)

Green

c)

Blue

d)

Purple

18.

What is the salt formed when nitric acid is added to aluminium hydroxide?

a)

Sodium chloride

b)

Aluminium nitrate

c)

Sodium nitrate

d)

Aluminium chloride

19.

Which of these is the symbol for calcium?

a)

C

b)

Ca

c)

Cu

d)

Cl

20.

How many protons does a Lithium atom have?

a)

3

b)

6

c)

7

d)

6.941

21.

What gas is released when an acid reacts with a metal carbonate?

a)

Oxygen

b)

Hydrogen

c)

Helium

d)

Carbon dioxide

22.
Complete the following reaction:
Hydrochloric acid + magnesium hydroxide --> 
a)
Magnesium chloride + water 
b)
Magnesium + water
c)
Magnesium chloride + hydrogen gas 
d)
Magnesium chloride + water + carbon dioxide 
23.

Which subatomic particle has a positive charge?

a)

electron

b)

orbital

c)

proton

d)

neutron

24.

Which subatomic particle has a negative charge in the atom?

a)

proton

b)

neutron

c)

electron

d)

quark

25.

How many electrons does an Oxygen atom have?

a)

8

b)

24

c)

16

d)

15.99

26.

An atom becomes _________ when it loses electrons.

a)

Positive

b)

Negative

c)

Neutral

d)

Invinsible

27.
What is the maximum number of electrons in the second energy level?
a)
18
b)
8
c)
32
d)
2
28.

Mg atom has 12 protons. what is the electron arrangement of an Mg atom?

a)

2.8

b)

2.8.8

c)

2.8.2

d)

2.10

29.

what is the electron arrangement of atom N (atomic number = 7)?

a)

2,7

b)

2,8

c)

2,5

d)

7

30.
An atom becomes _________ when it gains electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
31.

If an ion has a 2+ charge, what does this mean?

a)

The atom has gained 2 protons

b)

The atom has gained 2 electrons

c)

The atom has lost 2 protons

d)

The atom has lost 2 electrons

32.

A temperature increase causes the particles ......

a)

to slow down

b)

move faster

c)

collide higher

d)

in the right order

33.

What makes a successful/effective collision?

a)

When molecules collide.

b)

When molecules collide with the correct orientation.

c)

When molecules collide with the correct orientation and enough energy.

d)

High Temperature.

34.
Rate of chemical reaction means
a)
amount of product formed
b)
speed of reaction
c)
concentration of reacting particles
d)
combining reactants with products
35.
Why does breaking up a solid reactant increase the rate of reaction?
a)
it creates more solid
b)
it creates more energy
c)
it increases the surface area
d)
it increases the concentration
36.

Which of these is the symbol for Copper?

a)

C

b)

Ca

c)

Cu

d)

Cl

37.

Which of these is the symbol for sodium?

a)

S

b)

So

c)

N

d)

Na

38.

Which of these is the symbol for potassium?

a)

P

b)

Ka

c)

K

d)

Pt

39.

Which one of these is the symbol for iron?

a)

Ir

b)

Fe

c)

I

d)

F

40.
What colour is universal indicator in strong acid?
a)
Green
b)
Orange
c)
Purple
d)
Red

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