year 7 matter

What is the definition of boiling point?

• The change of state from liquid to gas that occurs when bubbles of the substance in its gas state form throughout the liquid.

• The temperature at which a substance boils.

• The process by which a substance changes from one state to another.

• The complete mixing of a solute with a solvent to make a solution.

What does chromatography refer to?

• The mass of a material in a certain volume.

• A technique to separate mixtures of liquids that are soluble in the same solvent.

• The liquid or solution that collects in the container after the mixture has passed through the filter paper.

• The change of state from gas to liquid.

What is the process called when a gas changes to a liquid?

• Evaporation

• Condensation

• Filtration

• Diffusion

What is the term for the mass of a material in a given volume?

• Chromatogram

• Density

• Filtrate

• Dissolve

Which process describes the random movement of particles in liquids or gases from a region where there are many particles to one where there are fewer?

• Diffusion

• Distillation

• Dissolve

• Freeze

What is the purpose of distillation?

• To change the state from gas to liquid.

• To mix a solute with a solvent completely.

• To use evaporation and condensation to obtain a solvent from a solution.

• To separate a solid dissolved in a liquid.

What is the definition of gas according to the glossary?

• A state where a substance can flow and can also be compressed.

• The change of state from liquid to solid at the melting point of a substance.

• The technique to separate mixtures of liquids.

• The mass of a material in a certain volume.

What is gas pressure?

• The temperature at which a substance melts.

• The force exerted per unit area on the walls of a container, caused by collisions of particles with the walls.

• A quality of a substance that describes its appearance.

• The solid that collects in the filter paper during filtration.

What is the definition of a liquid according to the glossary?

• A substance that can flow and cannot be compressed.

• A single material with no other substances mixed with it.

• A very tiny object, such as an atom or molecule.

• A solution in which no more solute can dissolve.

What does 'melt' mean?

• The change of state from solid to liquid at the boiling point of a substance.

• The maximum mass of solute that dissolves in a certain volume of solvent.

• The change of state from solid to liquid at the melting point of a substance.

• A graph showing the change in solubility of a substance with temperature.