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Periodic Table
Vocabulary Through November 1
26
Chemistry
7th Grade
11/01/2009

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Term
Matter
Definition
Something that has volume and mass
Term
Gas
Definition
Matter that has no definite Volume or Shape
Term
Chemical Change
Definition
A change where new substances are made
Term
Physical Property
Definition
A characteristic you can observe or measure without changing the substance
Term
Potential Energy
Definition
The ability to produce energy
Term
Group
Definition
The elements in a column of a periodic table that share common characteristics
Term
Period
Definition
The rows of the periodic table
Term
Energy
Definition
The ability to do work
Term
Compound
Definition
Substance made of two or more elements
Term
Metal
Definition
An element that is shiny, malleable, conductor, in the middle and left of the periodic table
Term
Element
Definition
A substance made of atoms all having the same number of protons in the nucleus
Term
Luster
Definition
The shine of an element
Term
Solid
Definition
A substance with a definite volume and shape
Term
Physical Change
Definition
A change of a substance's appearance but not chemical property
Term
Kinetic Energy
Definition
Energy associated with motion
Term
Malleable
Definition
Capable of being shaped
Term
Chemical Property
Definition
How matter may change or react to form other substances
Term
Atom
Definition
The smallest unit of an element
Term
Liquid
Definition
Matter with definite volume but indefinite shape
Term
Metalloid
Definition
A non-metallic element that has some properties of metals like carbon or arsenic
Term
Brittle
Definition
Easily breakable
Term
Photosynthesis
Definition
The changing of light energy into chemical energy and synthesize organic compounds
Term
Conductor
Definition
something that transfers heat light or sound
Term
Non-metal
Definition
Poor conductor of heat or electricity like oxygen
Term
Law of Conservation of Energy
Definition
Energy can not be destroyed, it can only be converted
Term
Law of Conservation of Matter
Definition
Matter is neither created not destroyed but only transferred
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