The Amazing World of Solutes, Solvents, and Solutions
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Solubility: Soluble and Insoluble Substances
SubtopicSolubility: Soluble and Insoluble Substances under The Amazing World of Solutes, Solvents, and Solutions for Grade 5 CBSE.
Preview questions (no answers)
- 1.
What is the result of dissolving a solute into a solvent?
A.A pure substance
B.A chemical reaction only
C.A solution
D.An insoluble mass
- 2.
Which of the following is an example of a soluble substance used in everyday life?
A.Sand in a playground
B.Stones in a wall
C.Sugar in tea
D.Glass in a window
- 3.
In a solution of glucose and water, the glucose is the:
A.Solvent
B.Solute
C.Liquid
D.Mixture
- 4.
Which of these materials is insoluble and will float on the surface of water?
A.Salt
B.Wood shavings
C.Iron nails
D.Copper sulphate
- 5.
Which substance is an example of an insoluble solid used in the kitchen?
A.Sugar
B.Black pepper (whole)
C.Table salt
D.Glucose
- 6.
Which of the following remains unchanged when a solute is added to a solvent to form a solution?
A.The color of the solvent
B.The taste of the solvent
C.The total mass of the components
D.The clarity of the solvent
- 7.
If we mix sand and salt in water, what will happen?
A.Both will dissolve.
B.Neither will dissolve.
C.Salt will dissolve, sand will not.
D.Sand will dissolve, salt will not.
- 8.
Which of the following is a characteristic of a true solution?
A.The particles are large enough to be seen with a magnifying glass.
B.The particles settle down if the solution is left undisturbed for an hour.
C.The solute particles are distributed uniformly throughout the solvent.
D.The solution must always contain water as the solvent.
- 9.
An experiment shows that 36g of salt dissolves in 100ml of water at to form a saturated solution. If you add 40g of salt to 100ml of water at and stir, what will happen?
A.All 40g will dissolve eventually if you stir for an hour.
B.36g will dissolve and 4g will remain at the bottom as a solid.
C.The water will turn into a solid block of salt.
D.The temperature of the water will automatically rise to dissolve the extra 4g.
- 10.
Why is 'stirring' often required to make a solution, even if the substance is soluble?
A.Stirring creates the solute particles.
B.Stirring helps the solute particles spread out and find the empty spaces between solvent molecules faster.
C.Stirring changes the chemical formula of the water.
D.Stirring is only done to prevent the beaker from getting too hot.
Download the worksheet for The Amazing World of Solutes, Solvents, and Solutions - Solubility: Soluble and Insoluble Substances to practice offline. It includes additional chapter-level practice questions.
Factors Affecting Dissolution
SubtopicFactors Affecting Dissolution under The Amazing World of Solutes, Solvents, and Solutions for Grade 5 CBSE.
Preview questions (no answers)
- 1.
What is the term for the maximum amount of solute that can dissolve in a specific amount of solvent at a certain temperature?
A.Solubility
B.Saturation point
C.Volume
D.Density
- 2.
Which of the following can be used as a solid solute in a science experiment?
A.Copper sulphate crystals
B.Cooking oil
C.Oxygen
D.Kerosene
- 3.
A solution that is very 'weak' because it has a lot of water compared to the solute is called ______.
A.Strong
B.Dilute
C.Concentrated
D.Saturated
- 4.
If you add grams of sugar to grams of water, what will be the total mass of the solution?
A.grams
B.grams
C.grams
D.grams
- 5.
During an experiment, a student noticed that after heating a saturated salt solution, she could add more salt and it would dissolve. What does this prove?
A.Heating decreases solubility.
B.Heating increases the solubility of salt in water.
C.Salt is insoluble in hot water.
D.The solvent disappears when heated.
- 6.
Which component is usually present in the largest amount in a solution?
A.Solute
B.Solvent
C.Crystals
D.Sediment
- 7.
What is the term for a liquid that has dissolved as much solute as it can at a certain temperature?
A.Unsaturated solution
B.Concentrated solution
C.Saturated solution
D.Dilute solution
- 8.
Which of these is a correct scientific conclusion about 'Factors Affecting Dissolution'?
A.Only temperature affects how fast something dissolves
B.Dissolution is a physical change influenced by temperature, surface area, and agitation
C.Salt dissolves in water because water molecules are smaller than salt molecules
D.Solids dissolve better in cold water because cold water is more 'stable'
- 9.
If you have a solution where no more solute can be dissolved at that temperature, and you add more solute, what will happen to the 'extra' solute?
A.It will dissolve if you wait for 24 hours
B.It will settle at the bottom as a precipitate
C.It will float on the surface
D.It will turn the solvent into a solid
- 10.
Observe the following table. Which solute has its solubility MOST affected by the change in temperature?
A.Solute A
B.Solute B
C.Solute C
D.Solute D
Download the worksheet for The Amazing World of Solutes, Solvents, and Solutions - Factors Affecting Dissolution to practice offline. It includes additional chapter-level practice questions.
Saturated and Unsaturated Solutions
SubtopicSaturated and Unsaturated Solutions under The Amazing World of Solutes, Solvents, and Solutions for Grade 5 CBSE.
Preview questions (no answers)
- 1.
Which of these is a solvent used in nail polish remover?
A.Acetone
B.Sugar
C.Salt
D.Iron
- 2.
If a solution has a lot of solute but is not yet full, it is a/an:
A.Saturated solution
B.Unsaturated solution
C.Solvent
D.Solid
- 3.
What happens to the level of water in a glass when you dissolve a very small amount of sugar?
A.It rises significantly
B.It goes down
C.It remains almost the same
D.The water disappears
- 4.
When we say 'Solute + Solvent = Solution', what is the solute in a glass of lemonade with dissolved salt?
A.Water
B.Salt
C.Glass
D.The air
- 5.
Which of the following is a way to make a solute dissolve slower?
A.Using cold solvent
B.Stirring the mixture
C.Heating the solvent
D.Crushing the solute
- 6.
When we dissolve salt in water, the level of water in a measuring cylinder hardly rises. Why?
A.Salt has no volume
B.Water molecules shrink
C.Salt particles occupy the spaces between water molecules
D.Salt particles float on top
- 7.
Which statement correctly describes a saturated solution?
A.It contains very little solute
B.It can dissolve more solute if the temperature is lowered
C.It contains the maximum amount of solute that can be dissolved at that temperature
D.It is always a mixture of oil and water
- 8.
Which of these is a daily life example of reaching a 'saturation point'?
A.Adding a small pinch of salt to soup
B.Adding so much sugar to tea that it starts collecting at the bottom of the cup
C.Mixing a little lemon juice in water
D.Watching ice melt in a glass of water
- 9.
If you take a saturated solution of salt and boil it until all the water is gone, what remains?
A.Nothing, it all evaporates
B.Only the salt that was dissolved
C.A mixture of salt and new water
D.The salt will also evaporate
- 10.
In the context of solutions, what does 'equilibrium' mean in a saturated solution with undissolved solute?
A.The solute is disappearing
B.The rate of dissolving equals the rate of crystals forming back from the solution
C.The solvent is turning into solute
D.Nothing is happening at all
Download the worksheet for The Amazing World of Solutes, Solvents, and Solutions - Saturated and Unsaturated Solutions to practice offline. It includes additional chapter-level practice questions.
Floating, Sinking, and Density
SubtopicFloating, Sinking, and Density under The Amazing World of Solutes, Solvents, and Solutions for Grade 5 CBSE.
Preview questions (no answers)
- 1.
If you drop a marble into a glass of honey, it sinks very slowly. This is because honey is more ________ than water.
A.Transparent
B.Soluble
C.Dense
D.Gaseous
- 2.
Which of the following describes 'miscible' liquids?
A.Liquids that do not mix
B.Liquids that evaporate quickly
C.Liquids that mix completely with each other
D.Liquids that always sink
- 3.
A soap bar usually sinks in water, but a small piece of pumice stone (which has air holes) floats. Why?
A.Pumice is made of metal
B.Pumice is less dense than water because of air trapped in it
C.Soap is lighter than air
D.Pumice is soluble in water
- 4.
Which of these is a common example of a solute found in the kitchen?
A.Water
B.Salt
C.Milk
D.Vinegar
- 5.
In a copper sulphate solution, what is the 'solvent'?
A.Copper sulphate crystals
B.Water
C.Blue color
D.The beaker
- 6.
Which of the following statements about density is correct?
A.Density only depends on the weight of an object
B.Density is the amount of matter in a given space
C.A large object always has a higher density than a small object
D.Density changes when you change the shape of a solid object
- 7.
Why does a hot air balloon rise in the sky?
A.The hot air inside is more dense than the cold air outside
B.The hot air inside is less dense than the cold air outside
C.The balloon is filled with water vapor
D.The fire pushes the balloon up like a rocket
- 8.
A solid plastic cube is placed into three different liquids (X, Y, and Z) to compare their densities. In Liquid X, the cube sinks to the bottom. In Liquid Y, the cube remains suspended in the middle of the liquid without sinking or rising. In Liquid Z, the cube floats on the surface. Which of the following correctly ranks the densities () of these three liquids?
A.B.C.D. - 9.
What happens to the level of water in a glass when you dissolve a spoonful of sugar in it? (Assuming the sugar dissolves completely)
A.The level rises significantly
B.The level stays almost the same because sugar fits into the spaces between water molecules
C.The level goes down as water molecules compress
D.The level depends only on the temperature of the water
- 10.
Why do some people find it easier to swim in the sea than in a swimming pool?
A.Sea water is deeper
B.Sea water is more dense because of dissolved salts, which provides more buoyancy
C.The waves in the sea push you up
D.Sea water is cleaner
Download the worksheet for The Amazing World of Solutes, Solvents, and Solutions - Floating, Sinking, and Density to practice offline. It includes additional chapter-level practice questions.