Grade 7 Acids and Alkalis Lesson

Acid

• A solution with a pH greater than7, also called a base.

• A solution with a pH less than7.

• A solution with a pH of 7.

• A scale that tells how acidic or alkaline a substance is.

Alkali

• A solution with a pH greater than7, also called a base.

• A solution with a pH less than7.

• A solution with a pH of 7.

• A scale that tells how acidic or alkaline a substance is.

Neutral

• A solution with a pH greater than7, also called a base.

• A solution with a pH less than7.

• A solution with a pH of 7.

• A scale that tells how acidic or alkaline a substance is.

pH

• A solution with a pH greater than7, also called a base.

• A solution with a pH less than7.

• A solution with a pH of 7.

• A scale that tells how acidic or alkaline a substance is.

Litmus

• A substance that causes slight inflammation or other discomfort to the body.

• A substance that causes damage to metal or other materials through a chemical process.

• A paper used test to see if a solution is acidic or alkali.

• A solution used to show the acidity or alkalinity of solutions.

Universal Indicator

• A substance that causes slight inflammation or other discomfort to the body.

• A substance that causes damage to metal or other materials through a chemical process.

• A paper used test to see if a solution is acidic or alkali.

• A solution used to show the acidity or alkalinity of solutions.

Corrosive

• A substance that causes slight inflammation or other discomfort to the body.

• A substance that causes damage to metal or other materials through a chemical process.

• A paper used test to see if a solution is acidic or alkali.

• A solution used to show the acidity or alkalinity of solutions.

Irritant

• A substance that causes slight inflammation or other discomfort to the body.

• A substance that causes damage to metal or other materials through a chemical process.

• A paper used test to see if a solution is acidic or alkali.

• A solution used to show the acidity or alkalinity of solutions.

Acids and alkalis are types of solutions which can be found in the laboratory and home.

• Yes

• No

All solutions in water are

• acidic

• alkaline

• neutral

• Three of above