Chemistry // Acid & Alkali

what is an acid?

• A pH lower then 7

• A pH higher then 7

• A pH of 7 (neutral)

What is an alkali?

• A pH lower then 7

• A pH higher then 7

• A pH of 7 (neutral)

What happens when an alkali and acid is mixed together?

• They become neutral if an acid and alkali is added equally

• They explode as soon as they've touch each other

• They have shown no reaction

• The color changes to blue when mixed for a short time

Some food contains acid

• True

• False

Most cleaning products contains alkali

• True

• False

Lemons are sour because it has...

• Citric acid

• Malic acid

• Fumaric acid

• Tartaric acid

Select the alkali(s) in some cleaning products

• Sodium hydroxide

• Sodium bicarbonate (baking soda)

• Potassium hydroxide

• Sodium metasilicate

Sodium hydroxide is a strong alkali

• True

• False

Calcium hydroxide is a weak alkali

• True

• False

When an alkali or acid is spilled, you should...

• Wipe the area with cloth quickly

• Ignore it

• Cover the area with an item

• Quickly wash the area with lots of water