1 1 states of matter

The interconversion that takes place when a liquid becomes a solid is called freezing.

The type of energy that allows particles to move in the liquid state is kinetic energy.

Sublimation is when a solid changes directly into a gas.

The solid state state has particles very close together that vibrate about a fixed position.

False. Particles in a liquid have restricted movement and move around each other. Gas particles move quickly in all directions.

False. Energy is released when a gas changes into a liquid.

True. There is no difference between the melting point and freezing point.

When a solid turns to a liquid, the forces of attraction are overcome or broken.

True. The three states of matter are solids, liquids and gases.

Melting is when a solid changes into a liquid.

Boiling is when a liquid changes into a gas (at a constant temperature).

Freezing is when a liquid changes into a solid.

Evaporation is when a liquid changes into a gas.

Condensation is when a gas changes into a liquid, usually on cooling.

Interconversion of state is the change of matter from one state to another due to changes in temperature or pressure.

Diffusion is the movement of particles from an area of high concentration to an area of low concentration.

True. Diffusion provides evidence for the kinetic theory of matter.

Dilution is the process of making a solution less concentrated by adding more solvent.

False. Diffusion in liquids is slower than in gases because the particles in a liquid are closely packed together and move more slowly.

True. The particles can easily mix together because the water and potassium manganate (VII) particles are moving randomly and the particles can slide over each other

True. Bromine is red-brown as a gas.

A solvent is the liquid in which a solute dissolves.

A solute is the substance which dissolves in a liquid to form a solution.

A solution is the mixture formed when a solute is dissolved in a solvent.

A saturated solution is a solution with the maximum amount of solute dissolved in the solvent, at a particular temperature.

Soluble describes a substance that will dissolve.

Insoluble describes a substance that will not dissolve.

True. The water in sea water is the solvent.

False. Sand does not dissolve in water so it cannot be a solute.

True. Vinegar contains ethanoic acid and water, so it is a solution.

True. Solubility varies with temperature. A solution maybe saturated at room temperature but not at a higher temperature.

True. Solubility of solids is affected by temperature. As temperature increases, solids usually become more soluble.

As temperature increases, gases become less soluble.

As pressure increases, gases become more soluble.

A solubility curve represents solubility in g per 100 g of water plotted against temperature.

Solubility is the maximum amount of a substance that will dissolve in a given volume of solvent at a specific temperature.

The formula for calculating solubility is: