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Y8 -Acids and Alkalis
By Mr Pike
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Last updated about 11 hours ago
15 questions
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Formative Generation Completed!
Formative Generation Completed!
Question 1
1.
What is the pH value at which a substance is neither acidic nor basic?
5
10
0
7
Question 2
2.
Acids taste sour. True or False?
True
False
Question 3
3.
What color does red litmus paper turn when dipped in a base?
Red
Blue
Yellow
Green
Question 4
4.
Which reactions are generally represented by alkalis?
Neutralization
Photochemical
Displacement
Redox
Question 5
5.
Bases increase the hydronium ion concentration. True or False?
True
False
Question 6
6.
What is the pH value of strong acids?
Around 7
Less than 3
Around 14
More than 11
Question 7
7.
Which type of substance can have a pH level of 14?
Neutral substance
Strong acid
Strong base
Weak acid
Question 8
8.
Which are examples of acids?
Vinegar
Soap
Lemon juice
Baking soda
Question 9
9.
Alkalis have a slippery feel. True or False?
True
False
Question 10
10.
What is common in the chemical structure of all acids?
Sulphur
Hydrogen
Oxygen
Nitrogen
Question 11
11.
What do strong acids do to litmus paper?
Turn it blue
Turn it red
Turn it green
No change
Question 12
12.
Which are examples of bases?
Ammonia
Milk
Lemon juice
Vinegar
Question 13
13.
Which type of substance can neutralize acids?
Strong acid
Base
Strong base
All the above
Question 14
14.
Concentrated acids are always stronger than diluted acids. True or False?
True
False
Question 15
15.
What happens when an acid reacts with a base?
Explosion
Freeze
Neutralization
Precipitation