Chemical tests

Question 1

How do you test for ammonia gas?

Answer 1

Heat the test solution and hold a piece of litmus paper at the mouth of the test tube, the damp litmus paper should go from red to blue if ammonia gas is present

Question 2

How do you test for carbon dioxide?

Answer 2

Pump carbon dioxide gas into lime water, if present, the lime water should go from clear to a cloudy color

Question 3

How do you test for chlorine?

Answer 3

Hold a damp litmus at the mouth of the test tube, if chlorine gas is present, the paper should go from blue to red and then to a bleached white

Question 4

How do you test for hydrogen gas?

Answer 4

Hold a burning splint next to the mouth of the test tube, if hydrogen is present, there should be a squeaky pop that is heard

Question 5

How do you test for oxygen?

Answer 5

Hold a glowing splint next to the mouth of the test tube, if oxygen is present, the splint should relight

Question 6

What color does lithium burn like?

Answer 6

Red

Question 7

what color does sodium burn like?

Answer 7

yellow

Question 8

What color does potassium burn like?

Answer 8

Purple

Question 9

What color does calcium burn like?

Answer 9

Orange-red

Question 10

What color does copper burn like?

Answer 10

Green

Question 11

How do you test if water is pure or not?

Answer 11

Boil the water and if the boiling point isn’t 100 degrees celsius then it isn’t pure