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Acids, Bases and Salts

Total questions: 25

Worksheet time: 3hrs 38mins

Name
Class
Date
1.

An acid can turn

a)

Red litmus blue

b)

Blue litmus red

c)

Red litmus red

d)

Blue litmus blue

2.
Bases
a)
formed from joining positive and negative ions
b)
increase OH ions
c)
forms a salt and water
d)
increases H2O ions
3.
Salts
a)
formed from joining positive and negative ions
b)
increase OH ions
c)
forms a salt and water
d)
increases H2O ions
4.
An acid 
a)
Formed from joining positive and negative ions
b)
increases OH ions
c)
forms a salt and water
d)
increases H2O ions
5.
Neutralization reactions
a)
formed from joining positive and negative ions 
b)
increases OH ions
c)
froms a salt and water
d)
increases H2O ions
6.
Which of the following is a chemical property of a base
a)
a slippery feel
b)
conducts an electric current
c)
turns red litmus paper blue
d)
forms hydronium ions in water
7.
The difference between a strong and weak acid is: 
a)
Strong acids stay intact in water weak acids don't 
b)
Strong acids are slippery weak acids aren't
c)
Strong acids break apart in water. Weak acids stay intact
d)
Weak acids break apart in water most of the time, strong acids do all of the time. 
8.
A salt is formed when nitric acid combines with sodium hydroxide. What are present in the salt that forms?
a)
Sodium chloride
b)
sodium ions and nitrate ions
c)
only sodium ions
d)
only nitrate ions
9.
Pickles form by soaking in an acid. What are some properties of pickles
a)
Conducts electricity, bitter, turns litmus blue
b)
Slippery, sour, turns litmus blue
c)
Slippery, bitter, turns litmus blue
d)
Sour, turns litmus red, can conduct electricity
10.
Why does vinegar help preserve things like pickles? 
a)
It keeps moisture in. 
b)
It preserves flavors and crispness
c)
It kills bacteria that break down foods. 
d)
It keeps the cells alive
11.

True or false: a neutral solution has equal amounts of H+ and OH-.

a)

True

b)

False

12.

NaOH may be found in drain cleaners and as a component of soaps. Is NaOH an acid or a base?

a)

Acid

b)

Base

c)

Neither (Neutral)

13.

Is pure water acidic, basic, or neutral?

a)

Acidic

b)

Basic

c)

Neutral

14.
hydrochloric acid
a)
HCl
b)
HClO
c)
H3ClO3
d)
HClO3
15.

sulfuric acid

a)

HSO3

b)

H2SO3

c)

H2SO4

d)

H3SO4

16.
Mg(OH)2
a)
magnesium hydroxide acid
b)
hydromagnesium acid
c)
magnesium oxygen hydride
d)
magnesium hydroxide
17.

Basic oxide

a)

BaO

b)

P2O5

c)

ZnO

d)

CO2

18.
How are metal oxides formed?
a)
When metals react with oxide.
b)
When metals react with water.
c)
When metals react with air.
d)
When metals react with oxygen.
19.
Which of the following reactions produces calcium oxide?
a)
calcium and oxide
b)
calcium and water
c)
calcium and air
d)
calcium and oxygen
20.

Which is NOT an amphoteric oxide?

a)

zinc oxide

b)

aluminium oxide

c)

lead (II) oxid

d)

sodium oxide

21.

Acids are substances that release H+ ions when dissolved in water.

a)

True

b)

False

22.

Which oxide is able to react with HNO3?

a)

MgO

b)

CO2

c)

NO2

d)

CO

23.

Alkalis are substances that produce OH- ion when dissolved in water.

a)

True

b)

False

24.

An indicator is?

a)

A lab manual or guide

b)

Something like litmus paper that can tell you if a substance is acidic or basic

c)

A PS4 game where you pretend to direct traffic

d)

Something only scientists in a lab can use

25.

Do acids and bases conduct electricity?

a)

Only acids conduct electricity

b)

Only bases conduct electricity

c)

Bases and acids conduct electricity

d)

Neither conduct electricity

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