Matter & Density

Which element is a liquid at room temperature?

• Potassium - K

• Mercury - Hg

• Gold - Au

• Oxygen - O

Which type of mixture does not have a uniform composition?

• Compound

• Substance

• Homogeneous Mixture

• Heterogeneous Mixture

Two basic properties of the gas phase are

• Definite shape and volume

• Definite shape and indefinite volume

• indefinite shape and definite volume

• Indefinite shape and volume

Which set of procedures and observations indicates a chemical change?

• A cool, shiny metal is added to water in a beaker and rapid bubbling occurs.

• Large crystals are crushed with a mortar and pestle and become powder

• A solid is gently heated in a crucible and the solid slowly turns to liquid

• Ethanol is added to an empty beaker and the ethanol eventually disappears

Which phase/state has indefinite shape and volume, meaning it can expand and be easily compressed?

• Solid

• Liquid

• Gas

• Water

Which two substances can NOT be broken down by chemical change?

• C and CuO

• C and O

• CO2 and CuO

• CO2 and Cu

A cube has a volume of 8.0cm³ and a mass of 21.6 grams. The density of the cube in grams per cubic centimeter, is best written as

• 2.7 g/cm3

• 3.70 g/cm3

• .37 g/cm3

• 0.370 g/cm3

Which process is a chemical change?

• Melting of ice

• Boiling water

• Breaking ice into pieces

• Rusting of iron

Which statement best describes the shape and volume of an aluminum cylinder?

• It has no definite shape and no definite volume

• It has no definite shape and a definite volume

• It has a definite shape but no definite volume

• It has a definite shape and a definite volume

A state or phase of matter that has a DEFINITE shape and volume. The particles are arranged in a uniform pattern.

• Solid

• Liquid

• Gas

• Water