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Chapter 1 Vocabulary

Definitions of Chapter 1 Terms

QuestionAnswer
Homogeneous Mixture A mixture that has the same composition throughout
Heterogeneous Mixture A mixture that does not have uniform composition
Element A substance that can not be broken down into simpler parts
Compound A substance that can be broken down into simpler parts by a chemical change
Solution Another name for a homogeneous mixture
Solute The substance that is dissolved in a solution
Solvent The substance that does the dissolving in a solution
Alloy A type of solution where one metal is dissolved in another
Aqueous Solution A type of solution where water is the solvent
Physical Change A change that does not alter the identity or composition of matter
Chemical Change A change that results in the formation of new matter with different properties
Physical Property A description of the physical nature of matter; does not involve a change in the behavior of matter
Chemical Property A description of a behavior; this property can only be observed when matter undergoes a chemical change
Matter Anything that has mass and takes up space
Phase change A change where matter moves from one state (solid, liquid or gas) to a different state; controlled by temperature
Element The most specific and ordered class of matter
Heterogeneous Mixture The least ordered class of matter
Volume The characteristic of "taking up space"
Mass A measure of the amount of matter in an object; scientists prefer this measurement because it is constant
Weight A measure of the gravitational pull on an object; changes with position on the earth
Endothermic A type of energy change where energy must be put into (or absorbed by) the matter in a reaction
Exothermic A type of energy change where energy is released by the matter in a reaction
Hydrolysis of water An example of an endothermic reaction
Whoosh Bottle An example of an exothermic reaction
Created by: chembaker