christian2510
15.10.2020 •
Chemistry
Answer the following questions in the space provided.
1. Classify each of the following as a homogeneous or heterogeneous substance.
a. iron ore
b. quartz
c. granite
d. energy drink
e. oil-and-vinegar salad dressing
f. salt
g. rainwater
h. nitrogen
2. Classify each of the following as a physical or chemical change.
a. ice melting
b. paper burning
c. metal rusting
d. gas pressure increasing
e. liquid evaporating
f. food digesting
3. Compare a physical change with a chemical change.
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Ответ:
iron ore is heter
quartz homo
granite heter
energy drink homo
oil-and vingar salad dressing heter
salt homo
rainwater homo
nitrogen homo
ice melting chemical
burning paper chemical change
Ответ:
It has something to deal with the beaker
Explanation: