is it homogeneous or heterogeneous substance?
a- iron ore
b- quartz
c- granite
d- energy drink
e- salt
f- rainwater
g- nitrogen
is it phsical or chemical change?
a- metal burning
b- gas pressure increasing
c- liquid evaporation
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2007-09-05 10:50:02 · 4 answers · asked by help 1 in Science & Mathematics ➔ Chemistry
Looks like good homework........
2007-09-05 10:56:37 · answer #1 · answered by muddypuppyuk 5 · 0⤊ 0⤋
homogeneous only has one type of substance in it, like the salt. heterogeneous has many different types of individual substances in it not chemically bonded to each other like the energy drink.
A physical change results from the matter changing state, i.e. crumpling up paper. A chemical change results from the chemical makeup of the matter is changed, i.e. burning said crumpled paper.
2007-09-05 17:56:59 · answer #2 · answered by Rich 4 · 0⤊ 0⤋
complex issue. try searching on a search engine. that will may help!
2014-12-03 03:41:58 · answer #3 · answered by amy 3 · 0⤊ 0⤋
homogenous
metal burning
2007-09-05 17:54:04 · answer #4 · answered by Anonymous 4 · 0⤊ 0⤋