SCIENCE 6- REVIEW QUIZ

What is a mixture?

• A pure substance made up of only one type of particle

• A combination of two or more substances that are chemically bonded

• A combination of two or more substances that are physically mixed

• A chemical reaction between two or more substances

Which of the following is an example of a heterogeneous mixture?

• Air

• A chocolate chip cookie

• lemonade

• Saltwater

What is the main characteristic of a homogeneous mixture?

• It has visible particles that settle at the bottom

• It is always a solid.

• It can only be separated by chemical means

• It has a uniform composition throughout.

Which of the following is a physical property of mixtures?

• Ability to rust

• Boiling point

• Flammability

• Reactivity with acid

What happens to the properties of substances in a mixture?

• They change into new substances.

• They can only be separated by chemical reactions.

• They combine to form a new substance.

• They remain unchanged.

Which type of mixture has a uniform composition throughout and appears as a single substance?

• Chemical compound

• Element

• Heterogeneous mixture

• Homogeneous mixture

A mixture of oil and water is an example of what type of mixture?

• Chemical compound

• Element

• Heterogeneous mixture

• Homogeneous mixture

Which type of mixture has visible, distinct components that can be separated by physical means?

• Chemical compound

• Element

• Heterogeneous mixture

• Homogeneous mixture

Which method is used to separate a mixture of solids of different sizes, like sand and pebbles?

• filtration

• evaporation

• decantation

• distillation

What method is commonly used to separate solid particles from a liquid mixture by allowing the liquid to pass through a filter paper?

• filtration

• decantation

• distillation

• magnetism