Rev 2022

What happens when sugar is mixed with water?

• The sugar and water become a new compound that can be separated by crystallization

• The sugar and water become a mixture that can be separated by crystallization

• The sugar dissolves the water as they form a solution

• The sugar and water become a mixture that can be separated by filtration

Which of the following is a correct statement about distillation

• The components of the mixture have different densities

• The components of the mixture have different melting points

• The components of the mixture have different boiling points

• The components of the mixture form a heterogeneous mixture

Dyes in water soluble markers may be separated by means of..

• crystallization

• sublimation

• chromatography

• sedimentation

When two liquids do not mix, they form two separate layers and are known as

• (a) Miscible liquids

• (b) Immiscible liquids

• (c) Saturated liquids

• (d) Super saturated liquids

Observe the dots in the chromatogram. Which of the following would have highest solubility?

• A

• B

• C

• All have same solubility

Whose blood was found at the crime scene?

• John
• Lisa
• Bob
• Sure

Contains the maximum amount of dissolved solute

• unsaturated solution
• supersaturated solution
• saturated solution

What is a substance that is dissolved in another substance? 

• solution
• solute
• solvent
• compound

In this mixture, which of the following will be the solute?

• The water in the glass
• The glass that holds the final mixture
• The solution containing both powder and water
• The powder on the spoon

When materials combine to form a mixture, they

• A. keep their original properties.
• B. react to form a new substance with new properties.
• C. combine in a specific ratio.
• D. always change their physical state.