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Class 8 The Amazing World of Solutes, Solvents, and Solutions worksheet
CBSE Science. Solutes and solvents, saturation and solubility, concentration, density and measuring volume. Every sheet has 20 questions in three sections and an answer key, and the numbers change every time.
Sample questions
Real questions from this chapter, as the app sets them. Tap Answer to see the answer and working.
Section A · multiple choice
- 1.
In salt water, the salt is the:
- solution
- mixture of gases
- solvent
- solute
Answer
(d) solute
- 2.
An object has a mass of 57 g and a volume of 19 cm³. What is its density?
- 3 g/cm³
- 1083 g/cm³
- 0.33 g/cm³
- 4 g/cm³
Answer
(a) 3 g/cm³
57 ÷ 19 = 3
- 3.
An object has a density of 0.2 g/cm³. In water (density 1 g/cm³) it will:
- dissolve at once
- sink
- turn into a gas
- float
Answer
(d) float
0.2 is less than 1
Section B · short answer
- 4.
What are a solute, a solvent and a solution?
Answer
The solute dissolves in the solvent to make a uniform solution, like sugar (solute) in water (solvent).
- 5.
A brick piece has a mass of 75.6 g and a volume of 28 cm³. Find its density. Will it float or sink in water?
Answer
2.7 g/cm³; it will sink
75.6 ÷ 28
Section C · long answer
- 6.
Describe an activity to show how temperature affects how much solid dissolves.
Answer
Take the same amount of water at 20 °C, 50 °C and 70 °C. Add baking soda spoon by spoon to each, stirring, until no more dissolves. More dissolves in the hotter water, so solubility of solids increases with temperature.
Fresh sheets for your child
In the app, every The Amazing World of Solutes, Solvents, and Solutions sheet is new: the app remembers the questions your child has already had and leaves them out. Print the sheet as a PDF, or use notebook mode and write the answers in a notebook.
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