Acids and Alkalis

Question 1

What are acids a source of?

Answer 1

Hydrogen ions / H+

Question 2

What Ph values do acids have

Answer 2

Values that are less than 7, with 1 being the strongest, and 6 being the weakest

Question 3

What Ph does a neutral solution have?

Answer 3

It has a Ph of 7

Question 4

What Ph do alkalines have?

Answer 4

Values that are higher than 7, with 14 being the strongest, and 8 being the weakest

Question 5

What do indicators do?

Answer 5

They change colour, depending on whether the solution is acidic, neutral or alkaline.

Question 6

What is the colour of Litmus paper in acid, a neutral solution and in an alkaline

Answer 6

Acidic- Red
Neutral- Purple
Alkaline- Blue

Question 7

Colour of Methyl orange in acid, a neutral solution and in an alkaline

Answer 7

Acid- Red
Neutral- yellow
Alkaline- Yellow

Question 8

Colour of Phenolphthalein in acid, a neutral solution, and an alkaline solution

Answer 8

Acidic- Colourless
Neutral- Colourless
Alkaline- Pink

Question 9

What does the Ph scale measure?

Answer 9

The pH scale measures the acidity or alkalinity of a solution. The pH of a solution can be measured using a pH probe, or estimated using a universal indicator and a color chart.