PLEASE HELP I BEG YOU I REALY NEED HELP
When the characteristics or state (solid, liquid or gas) of a substance change but the chemical composition does not change that is an indication of:
a physical change
a chemical change
a global change
no change
Which of the following is an extensive physical property of matter?
volume
viscosity
odor
density
The percentage by mass of elements in a particular pure substance will vary from sample to sample.
True
False
Classify each of the following as an element, compound, or mixture.
mixture
compound
element
Answer
A.
propane gas
B.
soil (dirt)
C.
solid gold coin
Chemistry
Views: 0 Asked: 11-29 07:26:42
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