Pure Substance and Mixture Quiz

What is a pure substance?

• A substance that is a mixture of different elements and compounds

• A material that is constantly changing in composition and cannot be classified as a pure substance

• A material with a variable composition that can be separated into simpler substances by physical means

• A material that has a constant composition and cannot be separated into simpler substances by physical means.

Which of the following is an example of a pure substance?

• Mixture of sand and water

• Salt

• Air

• Diamond

What is an element?

• A type of musical note

• A type of weather phenomenon

• A type of cooking utensil

• A substance that cannot be broken down into simpler substances by chemical means.

Tags

NGSS.MS-PS1-1

What is a homogeneous mixture?

• A mixture where the components are uniformly distributed and the same throughout

• A mixture where the components are constantly changing

• A mixture where the components are separated into layers

• A mixture where the components are unevenly distributed

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

• Sand and water

• Saltwater

• Vegetable soup

• Oil and water

What is a heterogeneous mixture?

• A combination of two or more substances that are not uniformly distributed or mixed together.

• A type of mixture that only contains one substance

• A combination of two or more substances that are not mixed together

• A mixture of two or more substances that are uniformly distributed

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

• Salad

• Milk

• Sugar

• Water

Which of the following is a pure substance?

• Option B: Salad

• Option C: Salt

• Option A: Air

• Option A: Water

What is the difference between an element and a compound?

• An element is a pure substance made up of only one type of atom, while a compound is a substance made up of two or more different types of atoms chemically bonded together.

• An element is a mixture of different substances, while a compound is a pure substance

• An element and a compound are the same thing

• An element is made up of two or more different types of atoms, while a compound is made up of only one type of atom

Tags

NGSS.MS-PS1-1

What is a compound?

• A substance that cannot be broken down into simpler substances by chemical means.

• A type of weather phenomenon

• A type of cooking utensil

• A substance made up of two or more different types of atoms chemically bonded together.

Tags

NGSS.MS-PS1-1