Matter Matter's

Ryosuke and Dylan

The 4 Types of Matter

Matter is usually classified into three classical states of matter, with plasma sometimes added as a fourth state for scientific purposes. From left to right: grains of refined sucrose (a solid), water (a liquid), depiction of particles in a gas, and a plasma globe (plasma).

Liquid

Liquid has indefinite space and definite volume. Liquid can fill up shape of the container. Water is very hard to compress.

Solid

Solids has a definite shape and definite volume. Solids are mostly hard and but it keeps it shape. Atoms in the solid aren't able to move around much.

Gas

Gas has indefinite shape and indefinite volume. Gas's atoms are spread out. Gas can fill any contain up any container regardless of it's size or shape. Gas is everywhere.
what is matter?

Physical and Chemical Changes

Physical changes are changes affecting the form of a chemical substance, but do not change the chemical composition of that substance. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.[1]

Physical changes occur when objects or substances undergo a change that does not change their chemical composition. This contrasts with the concept of chemical change in which the composition of a substance changes or one or more substances combine or break up to form new substances. In general a physical change is reversible using physical means. For example salt dissolved in water can be recovered by allowing the water to evaporate.

A physical change involves a change in physical properties. Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.

An example of a physical change is the process of tempering steel to form a knife blade. A steel blank is repeatedly heated and hammered which changes the hardness of the steel, its flexibility and its ability to maintain a sharp edge.

Many physical changes also involve the rearrangement of atoms most noticeably in the formation of crystals. Many chemical changes are irreversible, and many physical changes are reversible, but reversibility is not a certain criterion for classification. Although chemical changes may be recognized by an indication such as odor, color change, or production of a gas, every one of these indicators can result from physical change.


Compounds and elements

Compound

Is a substance made of two or more elements.

Elements

Elements make up a coumpound.