Unit 1 Test

What type of matter is this?

• Compound

• Element

• Mixture of elements

• Mixture of compounds

What is the main evidence that a chemical change has occured?

• Change of color

• Production of Bubbles

• Production of Fire

• A new substance is produced

Which of the following are evidences of a physical change?

• Change of size

• Change of color (unintended)

• Change of state of matter

• Change of odor (Unintended)

Which of the following are examples of chemical changes?

• Burning paper

• Cutting paper

• Iron rusting

• Wrinkling paper

Which of the following are physical changes?

• Cutting your hair

• Fruit rotting

• Water boiling

• Dropping an alka-seltzer in water

Which state of matter typically has the HIGHEST density? (Water is a weird exception to this.)

• gas

• liquid

• plasma

• solid

Which is an example of a chemical reaction?

• melting ice

• rusting iron

• water evaporating

• rubbing a marker on paper

The change of state from a solid to a liquid is called

• freezing

• melting

• boiling

• evaporating

The change of state from a liquid to a gas is called

• boiling

• evaporation

• vaporization

• sublmiation

The change of state from a solid to a gas is called

• freezing

• melting

• boiling

• sublimation