Describing Matter Review

Luster

How shiny or dull a substance is

Ductility

The ability of an object to be drawn into a wire

Malleability

the ability of a substance to be hammered into thin sheets

Solubility

The ability of one substance to dissolve within another substance

Density

How much stuff there is in a particular space

Reactivity

The tendency of a substance to undergo a chemical reaction

Combustibility

The measure of how easily a substance will catch on fire

Solid

The state of matter where molecules move the slowest

Gas

The state of matter where molecules move the quickest

Universal Solvent

Water

Physical separation

when you separate a mixture by hand

Magnetic separation

separating magnetic substances such as iron from other non-magnetic substances

Evaporation

used to separate a salt water mixture

Filtration

separating a solid and liquid mixture such as pasta and water

Homogeneous mixture

a mixture where the composition is constant throughout

Heterogeneous mixture

a mixture where the composition is not the same throughout

Metal

the class of element that is typically shiny, malleable, ductile and reactive with acids and bases

Non-metal

the class of element that is typically dull, unmalleable, a gas at room temperature and unreactive with acids and bases

Metalloid

the class of elements that can be shiny of dull, and are semiconductors

Physical Change

An ice cube melting

Chemical Change

Frying an egg