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WorksheetsAcids and Alkalis
Total questions: 25
Worksheet time: 13mins
Universal indicator will . . . .
turn red with bleach
turn green with cola
identify weak and strong pH
turn red in an alkaline solution
How would you describe a solution of pH 8?
Neutral
Weak alkali
Weak acid
Strong acid
What is the correct description of how an acid and alkali react?
Acidification
Naturalisation
Neutralisation
Alkalisation
What pH best describes a neutral solution?
0
1
7
14
Which of the following hazard symbols means flammable?
A
B
C
D
What does this hazard symbol tell you about the substance being used?
It is extremely hot
It will give off radiation
It is very toxic
It is corrosive
What substance might have this hazard symbol?
Oxygen gas
Sodium chloride (salt)
Lead chloride
Ethanoic acid (vinegar)
You accidentally spill some dilute acid during an experiment. Choose the the best option below?
You mop it up yourself
You ignore it as it it is only dilute acid
You will automatically get a detention
You tell your teacher
What is an indicator?
A substance that changes colour in acid or alkali.
A substance that produces hydrogen gas when reacted with acids.
A substance that is neutral.
A substance that is always red in colour.
Examine the results (color change) of the pH paper shown in the picture. What type of substance was tested?
an acid
an alkali
a neutral substance
none of the above
The pH scale tells how acidic or basic a substance is. The scale goes from _____ to _______
1-10
0-14
1-14
1-100
The (a) measures how strong an acid or a base is
If a substance has a pH of 7 it is (a)
pH is the measure of the concentration of (a) ions
Acids react with bases to form _______ and _______ (first blank comma second blank)
(a)
The chemical reaction between an acid and a base is called a (a) reaction
A pH of 5 would be
Strong
Basic
Acidic
Neutral
A pH of 13 would be
Acidic
Neutral
Base
Weak
Acid + Alkali → (a) + Water
Acid + Alkali → ____________ + _____________
Neutral + Water
Salt + Water
Why hair conditioner important?
To neutralise the residue of acidic shampoo
To neutralise the residue of alkaline shampoo
Which one of the following is a medicine used for treating indigestion?
antibiotic
analgesic
antacid
antiseptic
When an ant bites , it injects ................
lactic acid
ascorbic acid
formic acid
oxalic acid
The wastes of many factories contain acids.
true
false
