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phy &chem change3

physical and chemical changes

a change that occurs without changing the identity of the substance physical change
a change that occurs by changing the identity of the substance chemical change
when two or more substance are combined physically mixture
when two or more substances are combined chemically and cant be separated by physical. compound
parts are mixed evenly throughout (same) Homogeneous mixture
parts are uneven throughout (different) heterogeneous mixture
type of mixture where the solution is dissolved/mixed evenly in the solvent solution
the part of the solution that dissolves solute
the part of the solution that the solute dissolves in solvent
smallest unit of matter atom
one of the 100 or more units that make up all matter, and found on the periodic table. element
how much matter is in some thing mass
the elements an compounds you start with in a reaction/equation reactant
the elements and compound that you end with in a reaction/equation products
the ability to react with another element or compound reactivity
the number in front of the molecule coefficients
the number of the bottom right of an element that tells how many atoms there are of the eelemts subscript
group 1 a highly reactivate groups of metals that makes compounds with group 7 Alkali metals
group 7 a highly reactive group of non-metals that makes compound with group 1 halogens
group 8 a group of non-reactive, non metals that are all gases at room temperature. noble gases
Created by: helen13