Chemistry Revision

Examples of weak acids :

• Vitamin C

• Baking soda

• toothpaste

• Vinegar

Which of these are strong alkali ?

• Soap

• Lemon

• Nitric acid

• Potassium hydroxide

What hazard does this symbols ?

Examples of indicators :

• Litmus paper

• Universal indicator

• Phenolphthalein

• All of them

The chemical reaction between acid alkali is called ...

• Pasteurization

• Precipitation

• Neutralization

• non of them

Products are the starting substances that react in a reaction.

Reactants are the new substances formed in a reaction.

• False

• True

When sometihng is burned it reacts with ........

• Carbon dioxide

• Oxygen

• Magnesium

• gold

How to test for oxygen gas?