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science vocab 6th

Structure and properties of matter vocabulary

QuestionAnswer
Thermal Energy the kinetic energy of the moving particles in a substance or an object.
solid Firm and stable in shape; not liquid or fluid.
Liquid having a consistency like that of water or oil, i.e., flowing freely but of constant volume.
Gas an airlike 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 see.
Phase Change When temperature changes, matter can undergo a phase change, shifting from one form to another.
Particle a minute quantity or fragment.
Melting point The temperature at which a substance changes from a solid to liquid.
Freezing point The temperature at which a liquid changes into a solid.
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.
Condensation 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 amount of mass something has in relation to its volume.
Pure substance A material that is composed of only one type of particle. A material made up of at least two different pure substances.
Atom The smallest unit of an element that still has the properties of that element.
Molecule A molecule is the smallest particle in a chemical element or compound. Molecules are made up of atom s that are held together by chemical bonds.
Element A substance made up of only one kind of atom.
Compound A substance made up of atoms of two or more elements that are chemically combined.
Extended structure
Physical change A change that does not make a substance into a new substance.
Chemical change A change in which one or more new substances are formed.
Natural resource A material that occurs in nature that is essential or useful to people.
Synthetic material Synthetic fabrics are textiles made from man-made rather than natural fibers.
Created by: 502_rissa
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