WorksheetsAcids , bases and salts
Total questions: 10
Worksheet time: 5mins
When the pH scale goes lower than 7, it means that the substance is ______.
neutral
acidic
basic
salt
Which concept is correct?
Arrhenius stated that acids are hydrogen ion donors
Lewis stated that acids accept negatively charged ion acceptors
Bronsted-Lowry stated that bases accepts Hydrogen ions
All of the statements are correct
A pH scale of 0 _____ to people when exposed without protection
is beneficial
is dangerous
has no effect
medicinal value
This citrus fruit commonly consumed at home has a ph level of _____.
below 7
7
above 7
0
When an indicator (litmus paper ) is dipped in these liquids , there will be a change from ____
blue to red
red to pink
pink to purple
pink to yellow
If you put too much lemon in your glass and it is too sour , how will you control the taste ?
add more lemon juice
add more water
add salt
all of these
The type of acid in these products is _____
sulfuric acid
lactic acid
sulfuric acid
acetic acid
Acid rain is a phenomenon and it is caused by ____.
the air in the atmosphere
pollutants that reacts with the air
meteorites falling on Earth
weather conditions
Which statement is incorrect with water?
It is composed of hydrogen and oxygen molecules.
it has a neutral ph of 7.
It reacts with base to form salt
Water with minerals is a solution.
Stomach produces acidity to ______ digestion of food.
delay
facilitate and help
stop the total
