Chemistry Unit 1 -#1

Match the following

• Contain two or more diff. types of atoms

• Pure Substance

• could be elements or compounds.

• Molecule

• Contain only one type of atom

• Element

• 2 or more atoms stuck together.

• Compound

An Alloy is considered a mixture of metals

• True

• False

A mixture does not vary in composition.

• True

• False

The action of purifying a liquid by a process of heating and cooling is called:

• Boiling

• Distillation

• Dehydration

• Purification

Which of the following are considered physical properties:​ ​ (a)   ​ ​ (b)   ​ (c)   ​ (d)   ​ (e)  

• Length
• Density
• Volume
• Luster
• Color
• Flammability
• Reactivity
• Lentgh

Which of the following are Intensive Properties?​ (a)   ​ (b)   ​ (c)   ​ (d)  

• Luster
• Boiling Point
• Melting Point
• Temperature
• Size
• Volume
• Mass
• Energy

Which of the following are examples of extensive properties?​ (a)   ​ (b)   ​ (c)   ​ (d)  

• Size
• Volume
• Length
• Energy
• Luster
• Color
• Boilingpoint
• Temperature

A property that does NOT depend on the amount of the substance is called an _________________ property

A property that does depend on the amount of a substance is an ______________ property.

Which of the following is an indicator that a chemical change has occurred?

• Gas forms

• Solid turns into a liquid

• the color did not change

• a solid melts