G8 PhySci Describing Matter Post Test #2

These photographs show two rocks that are about the same size. Which physical property do the two rocks share?

• State

• Texture

• Color

• Shininess

Which properties can be used to differentiate between pure nickel and pure iron?

• Density and electrical conductivity

• Appearance and state at room temperature

• Magnetism and thermal conductivity

• Appearance and density

The photo shows a gold coin. Which of these words describes a chemical property of gold?

• Insoluble

• Malleable

• Inert

• Shiny

Which term best describes the state of matter modeled in the beaker?

• Disorganized

• Amorphous

• Solid

• Liquid

In which state of matter do the particles move independently of one another?

• Gas

• Crystalline solid

• Amorphous solid

• Liquid

When liquid water freezes into ice, it becomes solid. Which phrase correctly describes ice?

• Crystalline and rigid

• Rigid and having low viscosity

• Amorphous and having low viscosity

• Crystalline and having high surface tension

A student adds a tablespoon of sugar to a glass containing tea and ice cubes. The mixture is then stirred until all the sugar dissolves. Which observation is a clue that the student's final mixture is heterogeneous?

• Some ice cubes are floating in the tea.

• Some water droplets form on the outside of the glass.

• The sugar crystals are no longer visible in the tea.

• The mixture looks the same throughout.

Which two factors can affect a solid solute's solubility?

• Whether the particles of the solute and solvent are charged

• Length of time spent stirring

• Pressure acting on the solute

• Temperatures of the solvent and solute

When would evaporation be a good method for separating the parts of a mixture?

• When the densities of the components are different

• When some of the components are very small

• When the boiling points of the components are different

• When some of the components are magnetic

Which process of making a stainless steel product does the photograph show?

• Conditioning

• Casting

• Corroding

• Combining