Evaporated ethanol can be isolated by cooling, without changing its disinfectant properties.
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Q46: When milk goes "sour," only a physical
Q47: Match the substances with their classification.
-Oil-vinegar salad
Q48: It is scientifically proper to construct a
Q49: Match the substances with their classification.
-Lemonade (without
Q50: Match the substances with their classification.
-Golden nugget
A)heterogeneous
Q52: Match the substances with their classification.
-sand and
Q53: A theory summarizes facts.
Q54: Match the substances with their classification.
-Gasoline
A)heterogeneous mixture
B)element
C)homogeneous
Q55: Match the substances with their classification.
-Intravenous liquid
A)heterogeneous
Q56: Match the substances with their classification.
-chocolate chip
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