Acids and Alkalis

The name of the acid found in the stomach is hydrochloric acid.

• true

• false

What number pH would a very strong acid have?

• 1

• 14

• 7

• 9

What number pH would a very strong alkali have?

• 1

• 14

• 9

• 4

True or false:

Ethanoic acid [i.e. vinegar] and citric acid [found in oranges and limes, for example] are highly corrosive.

• true

• false

True or false:

HYDROCHLORIC ACID + MAGNESIUM --> HYDROGEN + MAGNESIUM CHLORIDE

• true

• false

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

pH paper is out in a solution, which turns red. What is this?

• A strong alkali

• A strong acid

• A weak acid

• A weak alkali

pH paper, universal indicator and red cabbage indicator can all be used to :

• Determine whether something is corrosive or not

• Determine whether something is an acid or alkali

• Determine whether something is an element or not

• Determine whether something is a mixture or compound

When you mix an acid and alkali, what do you get?

• Water

• Alkali

• Salt

• Acid

Name the salt produced in this reaction.

• Hydrochloric acid

• Sodium hydroxide

• Sodium chloride

• Water

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What happens to blue litmus paper in acidic solutions?

• Red litmus turns blue

• Blue litmus turns red

• Blue litmus turns pruple

• purple litmus turns blue