tests for gasses

Question 1

why can testing for gasses be dangerous

Answer 1

• some gasses are toxic so you should use a fume cupboard

Question 2

what is the test for carbon dioxide

Answer 2

• limewater
• bubble the gas through lime water
• if it turns cloudy carbon dioxide is present

Question 3

what is the test for hydrogen

Answer 3

• squeaky pop test
• hydrogen will make a squeaky pop with a lighted splint
• the sound comes from the hydrogen burning with the oxygen to form water

Question 4

what is the test for oxygen

Answer 4

• glowing splint
• if oxygen is present it will relight the glowing splint

Question 5

what is the test for chlorine

Answer 5

• hold damp blue litmus paper over it
• if chlorine is present it will bleach the litmus paper turning it white