Chemistry Practical Quiz

Chemistry Practical Quiz

Assessment

Interactive Video

Chemistry, Science

9th - 12th Grade

Hard

Created by

Emma Peterson

FREE Resource

The video tutorial by Paul Roberts, a chemistry teacher at Andover College, covers the core practical of identifying ions in unknown salts. It includes methods for identifying cations and anions, performing flame tests, and testing for ammonia and ammonium ions. Safety precautions are emphasized throughout the experiments. The tutorial provides detailed steps and tips for conducting these tests, ensuring accurate results while maintaining safety.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary focus of the practical discussed in the video?

Identifying cations in unknown salts

Identifying anions in unknown salts

Measuring the pH of solutions

Determining the solubility of salts

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to avoid cross-contamination between solutions?

It can increase the temperature of the solutions

It can make the solutions more acidic

It can cause inaccurate observations

It can change the color of the solutions

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What color precipitate is formed when aluminium ions react with sodium hydroxide?

Blue

Green

Brown

White

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you differentiate between calcium and aluminium ions when both form white precipitates?

By using a flame test

By adding more sodium hydroxide

By adding hydrochloric acid

By heating the solution

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What flame color is produced by lithium ions?

Blue-green

Crimson red

Lilac

Orange

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which ion causes a blue-green flame in the flame test?

Calcium

Sodium

Potassium

Copper

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the characteristic smell of ammonia?

Pungent and fishy

Odorless

Sour

Sweet

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