Review: Pure Substance & Mixture

A pure substance is either a _______________ or a ___________.

• mixture or colloid

• solution or suspension

• element or compound

• compound or solution

How is matter found on Earth primarily classified?

• Solids, liquids, and gases

• Pure substances and mixtures

• Elements and compounds

• Homogeneous and heterogeneous

What is a characteristic of an element?

• It can be physically separated into simpler substances.

• It is a combination of different types of atoms.

• It consists only of atoms that all have the same number of protons.

• It requires a chemical process to separate its components.

COMPOUNDS are pure substances.

• TRUE

• FALSE

Mixtures can be separated _____________.

• physically.

• chemically.

What is a synonym for the word 'uniform'?

• different throughout

• same throughout

What is true about compounds?

• They can be physically separated into their constituent elements.

• They are mixtures of elements that are not chemically bonded.

• They are pure substances formed by elements bonded together.

• They are always uniform throughout and are also called solutions.

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

• Fruit salad

• Oil and vinegar

• Soil

• Gatorade

What defines a heterogeneous mixture?

• It is uniform throughout.

• It can only be separated by chemical processes.

• It is not uniform and is different throughout.

• It is also known as a solution.

A fruit salad is an example of a compound.

• TRUE

• FALSE