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Properties of mater

Density, Elements v Compounds, Physical v Chemical Changes

TermDefinition
physical characteristics characteristics observed or measured. does Not change the identity of the substance
chemical characteristics ability to change into a NEW substance with different properties
production of gas Bubbles, Foaming, Fizzing, Smoke, Odor
color change A different color appears. *Not always chemical
formation of percipitiate Cloudiness, foggy, Solid at the bottom
change in heat or light energy Temperature Increase, Temperature Decrease, Spark, Explosion, Glowing
element PURE Substance, One kind of atom, Same "shape"
element symbol shown by 1-2 letters. 1st letter is always Capital, 2nd is lowercase. Ex: Na
compound More than one kind of atom. Different "shapes" Ex: H2O
subscript tells you how many atoms of each element the compound has.
no subscript only has one atom of that element
metals to the Left of the zigzag. Solid at room temp. (except Mercury). Good conductors. Metallic. Ductile. Malleable
metalloids on the zigzag. Share properties of metals and nonmetals. Ex: B, Si, Ge, As, Sb, Te, Po
nonmetals to the Right of the zigzag. Solid, liquid or gas at room temp. Poor conductors. Brittle. Not metallic.
metallic Shiny
ductile ability to be pulled into wire
malleable ability to be hammered into sheet
Created by: ScienceRMS