Term |
Definition |
Thermal energy |
The kinetic energy of the moving particles in a substance or an object. |
Solid |
Firm and stable in shape. |
Liquid |
having a consistency like that of water |
Gas |
an airl ike fluid substance which expands freely to fill any space available, irrespective of its quantity. |
Plasma |
A state of matter made up of charged atoms,uncharged atoms,and free electrons |
Colloid |
A mixture that contains particles that are to small to see. |
Phase Change |
The states in which matter can exist: as a solid, liquid, or gas. When temperature changes, matter can undergo a phase change, shifting from one form to another. |
Particle |
A minute portion of matter. |
Melting Point |
The temperature at which a substance changes from a solid to a liquid. |
Freezing point |
The temperature at which a liquid turns into a solid when cooled. |
Boiling Point |
The temperature at which a substance changes from a liquid to a gas. |
Evaporation |
The process by which a liquid changes into a gas. |
Condesation |
The process by which water vapor changes into liquid water. |
Volume |
The amount of space something takes up. |
Mass |
The amount of matter something has. |
Density |
The degree of compactness of a substance. |
Pure Substance |
A material that is composed of only one type of particle |
Atom
|
The basic unit of a chemical element. |
Molecule |
a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction. |
Element |
each of more than one hundred substances that cannot be chemically inter-converted or broken down into simpler substances and are primary constituents of matter. |
Compound |
a thing that is composed of two or more separate elements; a mixture |
Extended Structure |
made larger the arrangement of and relations between the parts or elements of something complex. |
Physical Change |
A physical change is a change in which no new substances are formed. |
Chemical Change |
a usually irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties |
Natural Resource |
materials or substances such as minerals, forests, water, and fertile land that occur in nature and can be used for economic gain. |
Synthetic Material
|
Synthetic fabrics are textiles made from man-made rather than natural fibers. |