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Chemistry 2019

QuestionAnswer
What are two of the four signs of a chemical reaction gas production, color change, rearrangement of atoms, energy released as heat or light
What side of the periodic table are metals left
What side of the periodic table are nonmetals right
what side of the periodic table are transition metals middle
What charge are protons positive
What charge are electrons negative
What charge are neutrons neutral
How do you find the number of protons atomic number
How do you find the number of electrons atomic number
How do you find the number of neutrons atomic mass - atomic number
Law of conservation of energy energy can not be created or destroyed
Exothermic Energy is released. Temperature rises.
Endothermic Energy is absorbed. Temperature drops.
Synthesis two or more substances combine to form a new compound
Decompostion Single compound breaks to form two or more simpler substances
Combustion At least one product always contains oxygen
Single Displacement One element takes the place of another element
Double displacement Exchange of atoms or ions between compounds
Oxidation-Reduction One atom loses an electron, one atom gains an electron
Atomic Mass Number protons and neutrons combined
Atomic Number Number of protons (same number of electrons
Cohesion Water molecules are attracted to other water molecules
Surface Tension Cohesion of water molecules at the surface of a body of water
Created by: whitney.chandler
 



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