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WorksheetsG6 UWCSEA Acids and Bases
Total questions: 30
Worksheet time: 24mins
A substance that is 3 on the pH scale would be a(n):
acid
base
neutral
solute
According to the pH scale, which item is more acidic than lemons?
battery
vinegar
milk
blood
According to the pH scale, which item is a stronger base than soap?
baking soda
ammonia solution
tomato
bleach
Which is the correct set of acid properties?
sour taste, corrosive, change litmus from red to blue
sour taste, corrosive, change litmus from blue to red
sweet taste, slippery, change litmus from blue to red
sour taste, slippery, change litmus from blue to red
Which property is not associated with acids?
Sour taste
strong acids can burn you
turns litmus paper blue
reacts with metals
Which of the following is true about acids and bases?
The lower the pH #, the stronger the acid
the higher the pH #, the stronger the acid
The lower the pH #, the more neutral the acid
The higher the pH #, the weaker the base
What type of paper is used to test for acids and bases?
Red paper
Blue paper
Lined paper
Litmus paper
A neutralization reaction will always produce
Water & salt
Water
Salt
Water and carbon
Which of the following is an example of a neutralization reaction?
Using baking soda to soothe a bee sting
Using a tooth paste to prevent tooth decay
Taking an antacid to ease heartburn
All the answers are correct.
Complete the word equation below:
Acid + alkali --> ............... + water
water
salt
gold
metal
Toothpaste contain .................. that neutralize acid formed by bacteria.
alkali
acid
antacid
slaked lime
Excess acids in stomach can be neutralized using ............
antacid
vinegar
slaked lime
hydrochloric acid
..................................... is used to treat water to reduce the acidity of water.
alkali
slaked lime
antacid
vinegar
What is neutralization reaction ?
When two acids react
When two bases react
When an acid and a base react
None of the above
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.
Which of the following are or can be used as indicators?
purple cabbage
Universal indicator
Litmus paper
all answers are correct
