68-69: How do Metals React with Acids (Foundation)

Question 1

How could you prove that sugar was still in water after it had been dissolved?

Answer 1

Evaporate the water

Question 2

Is dissolving sugar in water a chemical or a physical change? Explain.

Answer 2

Physical because it IS reversible

Question 3

What two substances are made when magnesium reacts with hydrochloric acid?

Answer 3

Magnesium chloride and hydrogen

Question 4

“Because adding magnesium to dilute hydrochloric acid makes new substances, it is a ______ change”

Answer 4

Chemical

Question 5

Which sentence is more accurate?

1. Magnesium dissolves in acid
2. Magnesium reacts with acid

Answer 5

2. • Magnesium reacts with acid

Question 6

Is the ‘pop’ test a chemical or a physical change? Explain.

Answer 6

Chemical because it isn’t reversible

Question 7

When magnesium reacts with hydrochloric acid you get a salt called ________

Answer 7

Magnesium chloride

Question 8

Metal + Acid –>

Answer 8

Metal + Acid –> Salt + Hydrogen

Question 9

Magnesium + Hydrochloric Acid –>

Answer 9

Magnesium Chloride + Hydrogen

Question 10

Magnesium + Nitric Acid –>

Answer 10

Magnesium Nitrate + Hydrogen

Question 11

Magnesium + Sulphuric Acid –>

Answer 11

Magnesium Sulphate + Hydrogen