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Science 2nd 9 w test

Science Second Nine Weeks Test: Term and Definition

The temperature at which a substance changes a solid to a liquid. Melting point
The expansion of matter when it is heated. Thermal expansion
The transfer of heat through waves. Radiation
A measure of the average kinetic energy of the individual particles in an object. Temperature
Transfer of heat through liquids or gases. Convection
Transfer of heat created by direct contact. Conduction
No more energy can be removed from matter. Absolute zero
____ always moves from a warmer place to a cooler place. Heat
A material that doesn't let heat travel through it. Insulator
Total energy off all the particles in a substance of material. Thermal energy
Energy of position. Potential
The ability to do work. Energy
Energy of motion. Kinetic
Energy that moves in electromagnetic waves. Radiant
Energy stored in the nucleus of an atom. Nuclear
Energy created by moving molecules within a substance. Thermal
Energy occurs when an object moves from one place to another. Mechnical
Energy created by moving electrons. Electrical
Energy that moves in longitudinal waves. Sound
A short, easy way to show chemical reaction, using symbols instead of words. Chemical equation
A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound. Subscript
The process of splitting a nucleus into two smaller nuclei. Nuclear Fission
The combining of two nuclei with low masses to form one large nucleus. Nuclear Fusion
Science and technology of small things. Nanotechnology
A chemical reaction that absorbs energy in the form of heat. Endothermic Reaction
A chemical reaction that releases energy in the form of heat. Exothermic Reaction
Rule that energy cannot be created or destroyed. Law of Conservation of Energy
Rule that mass is neither created nor destroyed during a chemical reaction. Law of Conservation of Mass
The starting substances in a chemical equation, on the left side of the arrow. Reactants
The substances that are formed in a chemical reaction on the right side of the arrow. Products
The arrow in between the reactants and the products. Yield
A number placed in front chemical formula in an equation that indicates how many atoms or molecules of each reactant and product are involved in a reaction. Coefficient
A solid that forms from solution during a chemical reaction. Precipitate
Able to be hammered or pressed permanently out of shape without breaking or cracking. Malleable
Able to be drawn out into a thin wire. Ductile
Same element with different numbers of neutrons. Isotopes
Created by: laurenbarrett