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Chemistry Chapter 3

Matter, Properities, Elements, Mixtures, etc.

matter mass that occupies space
physical properties color, odro, volume, melting point, boiling point, density
chemical properties ability to form new substances after changes ex. wood burning giving off heat and gases and leaving behind residues of ashes, rustin
element substance that cannot be broken down into other substances by chemical methods
compound substance composed of a given combination of elements that can be broken down into thos eelements by chemical methods
mixture something that has a variable composition
pure substance always has the same composition
2 ways to separate mixtures distillation and filtration
homogenous mixture substances that cannot be separated physically
heterogenous mixture substances that cna be easily separated physically
energy the capacity to do work
how does temperature affect motion of molecules? as temp increases, so does motion
calorie amount of energy (heat) required to raise the temp. of one gram of water by one degree celcius
1 cal=??J 4.18 J
Specific heat/energy formula Q= m x sh x tc
specific heat amount of energy required to change the temp of ne gram of substances by 1 degree Celcius
Mass=? units grams
specific heat=? units j/g degress c
temperature change degrees Celcius
energy/heat Joules or calories
Created by: rolypoly333