Acids and alkalis 23.03.20

What is an aqueous solution?

• only contains water

• a solution in which the solvent is water

• any liquid

• a mixture of gases

Acids produce ________ _____ in an aqueous solution?

• Hydrogen ions (H+)

• Acid molecules

• Water particles

• Hydroxide ions

A neutralization reaction will always produce...

• water & salt
• water
• salt
• water & carbon

Reaction between acid and alkali producing salt and water:

• Combustion

• Neutralization

• Precipitation

• Decomposition

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Alkalis are source of

• hydrogen ions

• hydroxide ions

What does the pH scale tell us?

• how reactive a solution is

• the acidity and alkalinity of a solution

How can we test the pH of a solution

• Sudan III

• pH probe

• iodine

• Universal indicator

A(n) ______ is a substance with a pH less than 7

• Acid
• Alkaline
• Base
• Buffer

A(n) _______ is a substance with a pH greater than 7.

• Base
• Acid
• Buffer
• Water

According to the pH range which substance is more acidic than lemon juice

• Hydrochloric acid
• cabbage
• milk

Tags

NGSS.MS-PS1-2