Question 31
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. Test to see whether the iron filings in the mixture are magnetic. Rub a magnet under the Petri dish and observe. Mix the iron filings and sulfur together again.
