Qualitative Tests

Created by: jodi
Created on: 08-01-19 16:18

What are the observations if carbonate ions are present?

Effervescence; The solid disappears; Carbon dioxide released

1 of 10

What is the test for carbon dioxide?

Bubble gas through limewater in another test tube using a delivery tube. If carbonate ions are present, the limewater changes from colourless to milky.

2 of 10

How do you test for the ammonium ion using sodium hydroxide?

Place a few cm of sodium hydroxide in a test tube and add a spatula measure of the solid sample; warm gently. Test any gas evolved using damp red litmus paper or damp universal indicator paper or using a glass rod dipped in conc hydrochloric acid.

3 of 10

What are the observations if an ammonium ion is present?

Pungent gas is evolved. Damp indicator paper changes to blue. White smoke appears with glass rod.

4 of 10

How do you test for iodine?

Add a few cm of starch solution to the sample. If a blue-black colour is observed, then iodine is present.

5 of 10

Is ammonia gas acid or alkaline?

Alkaline

6 of 10

What is the test for hydrogen?

Use a burning splint and it gives a pop.

7 of 10

What is the test for oxygen?

Relights a glowing splint.

8 of 10

What is the test for hydrogen chloride?

Gives white fumes with ammonia solution and turns universal indicator paper red.

9 of 10

What is the test for chlorine?

Bleaches damp litmus paper

10 of 10

Other cards in this set

Card 2

Front

What is the test for carbon dioxide?

Back

Bubble gas through limewater in another test tube using a delivery tube. If carbonate ions are present, the limewater changes from colourless to milky.

Card 3

Front

How do you test for the ammonium ion using sodium hydroxide?

Back

Card 4

Front

What are the observations if an ammonium ion is present?

Back

Card 5

Front

How do you test for iodine?

Back

View more cards

Similar Chemistry resources:

See all Chemistry resources »

See all Qualitative Tests resources »

Get Revising

Qualitative Tests