tests

Question 1

describe the test for oxygen

Answer 1

• put glowing splint into gas
• if splint re-lights, oxygen is present

Question 2

describe the test for carbon dioxide

Answer 2

• bubble gas into lime water
• turns cloudy white if CO2 is present

Question 3

describe the test for hydrogen

Answer 3

• put lit splint into gas
• squeaky pop sound of hydrogen is present

Question 4

describe the test for water (chemical test)

Answer 4

• add ANHYDROUS COPPER SULPHATE to water
• turns white —> blue if water is present

Question 5

describe the test for water (purity test)

Answer 5

• boil water
• water will boil at exactly 100 degrees celsius if pure

Question 6

describe the test for chlorine

Answer 6

• put DAMP BLUE litmus paper into gas
• turns white/bleaches if chlorine is present