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Classification of Matter
14 study cards
14
Chemistry
10th Grade
08/25/2011

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Term
 Physical Changes
Definition

 

 Changes in which the identity of a substance doesn't change.

Term
Chemical Change
Definition

 

 The identities of substances change and new substances form.

Term
 When converting one measurement to another in the SI system, set the larger unit equal to this.
Definition
 One
Term
 Density is a (chemical/physical) characteristic of a substance.
Definition
 Physical
Term
 The formula for density is:
Definition

 D = m/V

 

or Density equals mass divided by volume.

Term
 All matter is composed of approximately 110 different kinds of this.
Definition
 Atoms
Term
 Pure substances are of these two types:
Definition
 Elements and compounds
Term
 Consists of two or more atoms combined in a definite or fixed ratio.
Definition
 Molecule
Term
 Pure substances that are not elements are:
Definition
 Compounds
Term
 A sample of matter that contains two or more substances.
Definition
 Mixture.
Term
 In this type of mixture, pure substances are uniformly distributed throughout.
Definition
 Homogenous
Term
 This type of mixture contains substances that are not evenly mixed.
Definition

 Heterogenous

 

 

Term
 Separation of sand from water uses this technique.
Definition
 Filtration
Term
 This type of separation of mixtures involves differences in boiling point.
Definition
 Evaporation or Distillation
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