Unit 1: Matter TEST Review

Which of the following is a physical change?

• corrosion

• explosion

• evaporation

• decay

Which of the properties listed is an extensive property?

• mass

• color

• density

• solubility in water

The process of matter changing from a solid to a gas is known as:

• evaporation

• sublimation

• deposition

• melting

Which of the following would be the best way to determine if a chemical change has taken place?

• Checking for changes in particle size for solid substances

• Comparing the temperature before and after a change has taken place

• Analyzing the composition of a substance before and after a change has taken place

• Determining the rate at which a phase change has taken place

A substance cannot be broken down by physical or chemical means. This substance would best be classified as a(n) -

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

A solid forms when the movement and average energy of a substance's particles -

• increases

• decreases

• remains the same

• is random

A chemical change occurs when a piece of wood -

• splits

• decays

• is cut

• is painted

   Which statement describes a physical change?

• An iron bolt on a bridge oxidizes and weakens the structure of the bridge.

• The surface of a silver cup turns black when it is exposed to air.

• Slivers of magnesium in fireworks form a bright glow as they burn.

• A sculptor casts a statue in molten bronze and allows it to harden as it cools.

Which pair below describes a physical change and a chemical change, respectively?

• A wooden board is sawed in half; a wooden board is painted green

• A shirt is folded; a shirt is unfolded

• Iron rusts in the rain; water freezes

• Salt dissolves in water; milk turns sour

A bar of copper has a mass of 216 grams (g) and a volume of 24 cm³. What is the density of copper?

• 9.0 g/cm³

• 0.11 g/cm³

• 5184 g/cm³

• 322 g/cm³