Question 32
Your teacher demonstrates this activity using 7 g of iron filings and 4 g of sulfur powder. Wear safety goggles. Heating is carried out by the teacher in a fume cupboard; do not touch the apparatus until it is completely cool. The teacher puts one to two scoops of the mixture in a test tube, plugs its mouth with mineral wool and heats until the mixture starts to glow, then turns off the burner. Observe the colour of the substance in the test tube. Record your observation.
