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Acid, base and salt-SA (2023-2024-2)

Total questions: 30

Worksheet time: 29mins

Name
Class
Date
1.
Which of the following substances contain an alkali?
a)
Baking powder
b)
Coca cola
c)
Distilled water
d)
Vinegar
2.
Which of the following pH numbers indicates a strong acid?
a)
1
b)
5
c)
7
d)
14
3.
What two substance are formed when an acid and alkali react together in equal amounts?
a)
Salt and water
b)
Alkali and water
c)
Acid and water
d)
Acid and alkali
4.

Which of the following is not the properties of alkalis?

a)

Slipery

b)

Have a pH less than 7

c)

The pH scale of alkalis from 8 - 14

d)

Corrosive

5.
Acids produce _________ ions when they break down or dissocciate. 
a)

OH-

b)

H2O

c)

Cl-

d)

H+

6.
Select the name for the following acid: H3PO4
a)
Phosphoric acid
b)
Phosphorous acid
c)
Hydrophosphoric acid
d)

Perphosphoric acid

7.
Which of the following statements is correct?
a)
Blue litmus paper turns red when placed in a base.
b)
Red litmus paper turns blue when placed in a base.
c)
Blue litmus paper stays blue when placed in an acid.
d)
Red litmus paper stays red when placed in a base.
8.

Phenolphthalein turns from clear to pink when the pH turns

a)

Acidic

b)

Basic

c)

Neutral

d)

Ionic

9.

What completely ionizes in solution?

a)

Weak acids

b)

Strong acids

c)

Strong Salts

d)

Neutral salts

10.
A hydrogen ion, H+, is the same as a(n):
a)

Neutron

b)

Electron

c)

Proton

d)

Hydroxide ion

11.

Which solution reacts with LiOH to produce a salt and water?

a)

KCl

b)

CaO

c)

NaOH

d)

H2SO4

12.

If NH3 + H2O --> NH4+ + OH-, what is NH4+ in this reaction?

a)

Acid

b)

Base

c)

Conjugate acid

d)

Conjugate base

13.

In the equation below, what is the conjugate base?

HBr + H2O ↔ Br- + H3O+

a)

HBr

b)

H2O

c)

Br-

d)

H3O+

14.

Which acid is present in your stomach

a)

NaOH

b)

HNO3

c)

HCl

d)

Ca(OH)2

15.

Acids present in plants and animals are called ______.

a)

Mineral Acids

b)

Natural Acids

c)

Dilute Acids

d)

Concentrated Acids

16.

When more water is added to an acid it is _____.

a)

Diluted

b)

Concentrated

c)

Neutral

d)

Basic

17.

What is the pH scale a measure of?

a)

The concentration of carbon dioxide in a solution

b)

The concentration of hydrogen ions (H+) in a solution

c)

The concentration of oxygen in a solution

d)

The concentration of nitrogen in a solution

18.

Which solution is more diluted?

Solution 1: 1000 mL of water, 60g of salt

Solution 2: 500 mL of water, 40 g of salt

a)

Not enough information to tell

b)

Solution 1

c)

Solution 2

d)

They are equally diluted

19.
What is the formula for Hydrosulfuric Acid?
a)

H2SO3

b)
H2S
c)

H2SO2

d)

H2SO4

20.
What is the formula for nitric acid?
a)
HNO2
b)
HNO3
c)
HNO4
d)
H2NO3
21.

When naming oxyacids, change "-ate" to:

a)

-hypo

b)

-ic

c)

-ous

d)

-ite

22.

A Bronsted Lowry base:

a)

Donates H+ to another substance

b)

Accepts H+ from another substance

c)

Produces H+

d)

Produces OH-

23.
Select the formula for the following acid: Carbonic Acid
a)
H2CO3
b)
HCO3
c)
H4C
d)

H2CO4

24.
What is the formula for perchloric acid?
a)
H3ClO3
b)
H3ClO4
c)
HClO3
d)
HClO4
25.

As the pH of a solution gets lower, the solution becomes more _____.

a)

Acidic

b)

Basic

c)

Neutral

d)

Ionic

26.
What is the gas produced from a Acid + Metal reaction?
a)

Water vapour

b)

Carbon dioxide gas

c)

Hydrogen gas

d)

Oxygen gas

27.
Select the name for the following base: Cu(OH)2
a)
Copper (II) hydroxide
b)
Copper (I) hydroxide
c)

Calcium (II) hydroxide

d)

Calcium (I) hydroxide

28.

In terms of acidic strength, which one of the following is in the correct increasing order?

a)

Water < Acetic acid < Hydrochloric acid

b)

Water < Hydrochloric acid < Acetic acid

c)

Acetic acid < Water < Hydrochloric acid

d)

Hydrochloric acid < Water < Acetic acid

29.

Sodium hydroxide turns phenolphthalein solution

a)

pink

b)

yellow

c)

colourless

d)

orange

30.

If the given solution neither changes the colour of the red litmus nor blue litmus paper , it is ..........................

a)

An Acid

b)

A base

c)

Neutral

d)

Colourless

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