Classifying Mixtures

What is a mixture?

• A mixture is a substance made by combining two or more identical materials

• A mixture is a substance made by combining two or more different materials without a chemical reaction occurring between them.

• A mixture is a substance formed by a chemical reaction between two materials

• A mixture is a pure substance with uniform composition

Give an example of a homogeneous mixture.

• Sand and water mixture

• Oil and vinegar mixture

• Sugar and water solution

• Salt and water solution

Provide an example of a heterogeneous mixture.

• Fruit salad

• Saltwater

• Chocolate milk

• Air

How can you separate a mixture of sand and iron filings?

• Use a magnet to attract the iron filings.

• Burn the mixture to separate the components

• Mix the sand and iron filings together with water

• Use a hairdryer to blow away the sand

Explain the difference between a solution and a suspension.

• The main difference between a solution and a suspension is the clarity and stability of the mixture.

• The difference lies in the color of the mixture.

• Solutions are only used in chemistry, while suspensions are used in physics.

• A solution is always solid, while a suspension is always liquid.

What is the difference between a colloid and a suspension?

• Colloids and suspensions are both homogeneous mixtures.

• Colloids have intermediate-sized particles, while suspensions have larger particles.

• Colloids are transparent, while suspensions are opaque.

• Colloids and suspensions have the same particle size.

How can you separate a mixture of salt and water?

• Boil the mixture

• Filter the mixture

• Evaporate the water

• Freeze the mixture

Define the term 'filtration' in the context of separating mixtures.

• Filtration is the process of separating liquid particles from a solid by passing the mixture through a filter.

• Filtration is a method used to separate gases from a mixture.

• Filtration is the process of separating solid particles from a liquid by passing the mixture through a filter.

• Filtration involves mixing two liquids together to form a new substance.

What is chromatography used for in separating mixtures?

• Separating mixtures based on color, not interaction with phases.

• A method for creating new compounds.

• Separating mixtures based on differential interaction with mobile and stationary phases.

• Used for mixing substances together.

Describe the process of distillation in separating mixtures.

• Distillation requires adding water to the mixture and stirring to separate the components.

• Distillation involves freezing the mixture to separate the components.

• Distillation is a process where the mixture is left to settle, allowing the components to separate naturally.

• Distillation involves heating a mixture to vaporize the more volatile component, then condensing and collecting it separately.