Practicals

Question 1

What is the apparatus for acid reacting with a metal?

Answer 1

Boiling tube

Delivery tube

Test tube, basin

Test-tube rack

Measuring cylinder (25 cm3)

Safety glasses

Wooden splint

1 mol/dm3 hydrochloric acid (15 cm3)

2 cm strip of magnesium

Question 2

What is the method for reacting an acid with a metal?

Answer 2

1. Fill the basin and test-tube with water, let the test tube rest on the bottom of the basin.
2. Measure 15 cm3 of hydrochloric acid using the measuring cylinder and add to the boiling tube.
3. Add the magnesium strip to the boiling tube – ensuring that the magnesium is fully immersed in the acid by swirling and allow the reaction to proceed for 10s.
4. After 10 seconds, place the delivery tube onto the boiling tube and place the end of the glass tube underneath the test-tube. Hold the test-tube upright and collect the gas produced. Once the test-tube is full, stopper the tube and place it in the test-tube rack.
5. Light a splint. Remove the stopper of the test-tube and hold the lit split at the top of the test-tube.