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Matter and Life

Chemistry CH1 Matter and Life

Matter anything that has mass and takes up space
Physical Change does not alter the chemical makeup of a substance (breaking, mp, bp, fp)
Chemical Property the ability of a substance to change into a different substance
Chemical Change alters the chemical makeup of a substance (digestion, growth, burning or rotting of food). Involves a chemical reaction
States of Matter Solid: has a defined shape and volume independent of its container. Liquid: has a defined volume but a variable shape that depends on its container. Gas: no defined shape or volume, has a variable shape and volume that depends on its container.
Intensive Properties do not depend on the amount of the substance (melting pt., boiling pt., density)
Pure can be either an element (Oxygen, Sulfur) like pure metals (Gold) or a compound like salt or water. always the same composition and properties
Mixture can be homogeneous (same throughout, one phase) or heterogeneous (not the same throughout, many phases) (seawater, mayo, rocks)
Extensive Properties dependent on the amount of a substance (mass and volume)
Atomic Mass sum of the # of protons and neutrons in an element
Atomic Number the # of protons in an element
Metal solid at room temp., have a lustrous appearance, are good conductors of heat and electricity and are malleable
Nonmetal brittle nature, nonconductors of heat and electricity
metalloids elements that have properties similar to both metals and nonmetals
physical property any aspect of an object or substance that can be measured or perceived without changing its identity (melting point, boiling point, density)
chemical compound a substance that can be broken down into simpler substances
element a substance that cannot be broken down chemically into simpler substances
Hydrogen H
Carbon C
Nitrogen N
Oxygen O
Flourine F
Sodium Na
Magnesium Mg
Phosphorous P
Sulfur S
Chlorine Cl
Potassium K
Calcium Ca
Iron Fe
Bromine Br
Silver Ag
Iodine I
Gold Au
Mercury Hg
Reactant a substance that undergoes change in a chemical reaction
Product a substance formes as a result of a chemical reaction
Created by: hugheslm