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Phys.& Chem. changes

Vocabulary

QuestionAnswer
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 2 or more substance are combined physically MIXTURE
when 2 or more substances are combined chemically and can't be separated by physical means. COMPOUND
parts are mixed evenly throughout (same) HOMOGENEOUS MIXTURE
parts are uneven throughout (different) HETEROGENEOUS MIXTURE
type of mixture where the solute 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 and compounds you start with in a reaction/equation REACTANT
the elements and compounds that you end with in a reaction/equation PRODUCT
the ability to react with another element or compound REACTIVITY
the number in front of the molecule COEFFICIENT
the number to the bottom right of an element that tells how many atoms there are of that element SUBSCRIPT
Group 1 a highly reactive group of metals that makes compounds with Group 7 (17) ALKALI METALS
Group 7 (17) a highly reactive group of non-metals that makes compounds with Group 1 HALOGENS
Group 8 (18) a group of non-reactive, non-metals that are all gases at room temperature. NOBLE GASSES
Created by: kaela wood
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