click below
click below
Normal Size Small Size show me how
Category 1
Matter and Energy
Term | Definition |
---|---|
Metals | elements located on the left of the stairs on the Periodic Table |
Nonmetals | elements located to the right of the stairs on the Periodic Table |
Metalloids | elements located on the stairs of the Periodic table |
Luster | the way light reflects from the surface of a substance |
Malleability | able to be hammered or bent |
Ductility | ale to be stretched into wire |
Brittle | able to break or shatter under stress |
Conductivity | to move electricity or heat from one place to another |
Element | a pure substance that cannot be broken down chemically |
Compound | a substance that consists of two or more different elements |
Subscript | the number that indicates the number of atoms of a specific element |
Coefficient | the number that indicates the number of molecules in a chemical formula |
Reactants | elements or compounds on the left side of a chemical equation |
Products | elements or compounds on the right side of a chemical equation |
Law of Conservation of Mass | matter cannot be created or destroyed |
Chemical Change | results in the formation of a new chemical substance |
Physical Change | matter is altered but the substance is not transformed into another |
Evidence of Chemical Reaction | Color, Temperature, Light, Odor, Precipitate, Gas, Sound |
Density | the objects mass divided by it volume |
Water Displacement | putting an object into water and recording how much the water level rises |