Pure Substances and Mixtures

Which of the choices is a Pure Substance?

• Concrete

• Cake

• Seawater

• Copper wire

Which of the choices is not a Pure Substance?

• Coffee

• Brass

• Water

• Sugar

A/an [blank] is a substance made up of atoms of two or more different elements joined by chemical bonds.

What is the smallest unit of an element that maintains the properties of that element?

• an Element

• an Atom

• a Compound

• a Mixture

A/an [blank] is the smallest unit of an element that maintains the properties of that element.

A substance that cannot be separated or broken down into simpler substances by chemical means is called a/an [blank].

When describing something that does not have a uniform structure or composition throughout, it is referred to as [blank].

[blank] is a term used to describe something that has a uniform structure or composition throughout.

According to Lesson 4 about "Pure Substances and Mixtures", the Greek word genus means...

• "genius"

• "same"

• "type"

• "different"

According to Lesson 4 about "Pure Substances and Mixtures", the Greek word heteros means...

• "type"

• "heated"

• "same"

• "different"