Chemical Change (Part 1)

What is the chemical formula for hydrochloric acid?

• H₂SO₄

• HCl

• HNO₃

• Cl

What is the electronic charge of proton?

• -1

• +1

• 0

• p

When Sulfuric acid + Zinc, what are the products form?

• Zinc sulfate + carbon dioxide + water

• Zinc sulfate + water

• Zinc sulfate + hydrogen

• Zinc hydroxide

When nitric acid + Potassium carbonate, what are the products form?

• Potassium nitrate + Carbon dioxide + water

• Potassium nitrate + hydrogen

• Potassium nitrate + water

• None of the above

When Sulfuric acid + Sodium hydroxide, what are the products form?

• Sodium sulfuric + water

• Sodium sulfuric + hydrogen

• Sodium sulfuric + carbon dioxide + water

• None of the above

What are the 4 different factors that matter can react with? (HOLE)

• Hydrogen, oxygen, lithium, electricity

• Heat, oxygen, light, electricity

• Hydroxide, oxidation, light, electro-plating

• ham, orange, lemon, egg

What is the process of acid + alkali?

• Oxidation

• Thermal decomposition

• Neutralisation

• Physical change

What is black when you buy it, red when you use it and gray when you throw it away?