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Chemistry Vocab

TermDefinition
Physical Change A change that affects the size, shape or form of a substance but does not affect its composition physical
Chemical Change A change that results in the formation of a new substance with different properties.
Element A pure substance cannot be separated into simpler substances by physical or chemical means.
Compound A pure substance composed of two or more different elements joined by chemical bonds
Mixture A combination of two or more pure substances that are not chemically combined
Matter The substance of which all material is made, has mass and occupies space.
Isotope Forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nucleus.
Proton Atomic particle that carries a positive electrical charge
Neutron Atomic particle that carries no electrical charge
Electron Atomic particle that carries a negative electrical charge
Heavy and Large Protons and Neutrons
Small and Light Electrons
groups vertical
Periods horizontal
Group 1 Alkali Metals
Group 2 Alkaline Earth Metals
Group 3 Boron Family
Group 4 Carbon Family
Group 5 Nitrogen Family
Group 6 Oxygen Family
Group 7 halogens
Group 8 Noble Gases
Properties Physical- look Chemical- reaction?
Metals shiny, malleable, good conductors of thermal energy and electric current
Non Metals not malleable not shiny and not ductile
Metalloids Shiny and brittle
Definition of Metalloids elements in this group that has properties of metals and non
Created by: harlowse