States and Matter Flashcards
A solid
Something that is hard and is usually difficult to move.
Liquid
Something that is soft for example water and drinks. A liquid is very easy to move.
Gas
Gas is a type of water that is pressurised. For example steam.
Properties
Characteristics or features of an object or substance.
Diffusion
The spreading of one substance through another due to the movement of their particles.
Mass
The quantity of matter in an object.
Volume
The amount of space taken up by an object or subsctance
Fluid
A subsctance that flows and has no fixed shape.
Melting point
The temperature at which a solid substance turns into a liquid (melts) or a liquid turns into a solid (freezes)
Boiling point
The temperature at which a liquid changes to a gas.
Sublimation
the change in state from a solid into a gas (or from a gas into a solid) without first becoming a liquid.
Metals
elements that conduct heat and electricity; shiny solids that can be made into thin wires and sheets that bend easily. Mercury is the only liquid metal.
Non metals
elements that do not conduct electricity or heat. They melt and turn into gases easily and are brittle and often coloured.
Metalloids
elements that have the appearance of metals but not all the other properties of metals.
Periodic table
a table listing all known elements. The elements are grouped according to their properties and in order of the number of protons in their nucleus.
