A physical picture used to illustrate a theory is a model.
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Q36: Air is a homogeneous mixture of nitrogen,
Q37: Water is heterogeneous matter because it is
Q38: The term used to describe the conversion
Q39: The earth, taken together as a unit,
Q40: Which of the following is not a
Q42: Cooking vegetables with steam is a chemical
Q43: Match the substances with their classification.
-Brass
A)heterogeneous mixture
B)element
C)homogeneous
Q44: Match the substances with their classification.
-Breakfast cereal
Q45: Match the substances with their classification.
-Diamond
A)heterogeneous mixture
B)element
C)homogeneous
Q46: When milk goes "sour," only a physical
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