Materials and Separation Techniques Quiz

Which of the following is a metal?

• Wood

• Iron

• Plastic

• Glass

What is the process of separating a solid from a liquid by passing the mixture through a filter?

• Evaporation

• Filtration

• Distillation

• Sedimentation

Which property would you use to classify materials as conductors or insulators?

• Color

• Electrical conductivity

• Density

• Hardness

Explain why a magnet can separate iron filings from sand.

• Iron filings are heavier than sand.

• Iron filings are magnetic, while sand is not.

• Sand is soluble in water, but iron filings are not.

• Iron filings are smaller than sand particles.

Which method would you use to separate a mixture of oil and water?

• Filtration

• Decantation

• Magnetic separation

• Sieving

Describe the process of using a sieve to separate materials.

• A sieve allows smaller particles to pass through while retaining larger particles.

• A sieve dissolves the smaller particles in water.

• A sieve uses heat to evaporate the smaller particles.

• A sieve magnetizes the larger particles.

Which of the following materials can be separated using a magnet?

• Salt

• Iron nails

• Sugar

• Sand

What is the main purpose of filtration in the separation of mixtures?

• To dissolve the solute

• To separate insoluble solids from liquids

• To evaporate the solvent

• To mix the components thoroughly

Classify the following materials based on their state: water, ice, steam.

• All are solids

• All are liquids

• Water is liquid, ice is solid, steam is gas

• Water is gas, ice is liquid, steam is solid

Which separation technique would be most effective for sorting a mixture of sand and iron filings?

• Filtration

• Magnetic separation

• Evaporation

• Distillation