Classification, chemical and physical properties. Science State Board, Class 9: lessons, tests, tasks.

1.	Acids
2.	Classification of Acids
3.	Aquaregia and Bases
4.	Classification of Bases
5.	Acids and Bases: Properties and uses
6.	Tests for Acids and Bases
7.	pH scale
8.	Types of Salts and properties & Water of Crystallisation
9.	Tests for Salts and its uses

1.	Acid containing fruits: Drag and drop Difficulty: easy	4
2.	Organic and inorganic acids: Drag and drop Difficulty: easy	1
3.	pH ranges: Dropdown answers Difficulty: easy	3
4.	Analysing the solutions of acid, base and salt: Drop down answer Difficulty: easy	2
5.	Acids: Select the correct answer Difficulty: medium	4.5
6.	Properties of acid and bases: Select the correct answer Difficulty: medium	3
7.	Acids and Bases in our daily life: Choose the correct answer Difficulty: medium	4
8.	Acids, bases and salts: Choose the correct answer Difficulty: medium	4
9.	Fundamentals of acids and bases: Select the correct answer Difficulty: medium	4
10.	Uses of acids Difficulty: medium	2
11.	Aquaregia: match the correct answer Difficulty: medium	3
12.	Organic and inorganic acids: True or false Difficulty: medium	3
13.	Bases classification: Dropdown answer Difficulty: medium	3
14.	Litmus test: Select the correct answer Difficulty: medium	2
15.	Acids and bases: Analyse based questions Difficulty: medium	4
16.	Acids, bases and salts: Choose the correct answer Difficulty: medium	4
17.	Indicators: Correct or incorrect statement Difficulty: medium	2
18.	Uses of salts: Drag and drop Difficulty: hard	7.5
19.	Acid and bases: Think before answer the questions Difficulty: hard	4
20.	Acids, Bases and Salts: Situation related questions Difficulty: hard	4
21.	Acid, bases and salts: Situation based questions Difficulty: hard	4

1.

Training Test

Difficulty: medium

16

1.

Methodical recommendation

Classification, chemical and physical properties