WorksheetsExploring Acids and Bases
Total questions: 15
Worksheet time: 8mins
What are three common properties of acids?
Sour taste, electrical conductivity, and reaction with bases.
Bitter taste
High viscosity
Non-reactive with metals
How do acids typically taste?
Bitter
Sweet
Sour
Salty
What is the pH range of acids?
7 to 14
0 to 6.9
6.9 to 10
-1 to 0
What are three common properties of bases?
They feel rough
They do not change the color of indicators
Three common properties of bases are: they taste bitter, feel slippery, and change the color of indicators.
They taste sweet
How do bases typically feel to the touch?
slippery or soapy
rough and gritty
cold and metallic
sticky and tacky
What is the pH range of bases?
5 to 7
8 to 10
7 to 14
0 to 6
What does the pH scale measure?
The temperature of a solution.
The acidity or alkalinity of a solution.
The concentration of solutes in a solution.
The color of a solution.
What is considered a neutral pH value?
5
6
7
8
What happens during a neutralization reaction?
An acid and a base react to form water and a salt.
An acid and a metal react to form hydrogen gas.
A base and a salt react to form an acid and water.
An acid and a base react to form carbon dioxide and a salt.
What are the products of a neutralization reaction?
Water and salt
Base and water
Salt and carbon dioxide
Acid and gas
What is an indicator in chemistry?
A catalyst that speeds up chemical reactions.
An indicator is a substance that changes color to signal pH or chemical changes.
A measurement of temperature in a reaction.
A type of chemical bond between atoms.
How does litmus paper indicate acidity or basicity?
Litmus paper turns yellow in basic solutions.
Litmus paper turns green in acidic solutions.
Litmus paper turns red in acidic solutions and blue in basic solutions.
Litmus paper changes color only in neutral solutions.
What color does phenolphthalein turn in a basic solution?
Yellow
Pink
Green
Blue
What is the role of indicators in titrations?
Indicators are used to dilute the titrant before use.
Indicators help identify the endpoint of a titration by changing color.
Indicators measure the pH of the solution.
Indicators increase the volume of the titrant used.
Why is it important to measure pH in solutions?
pH levels are irrelevant in industrial processes.
It is important to measure pH in solutions to assess their acidity or alkalinity, which influences chemical reactions and biological processes.
pH does not affect the taste of food.
pH measurement is only necessary for drinking water.
