i need to know for some home work i am doing
2007-02-07 09:03:55 · 7 answers · asked by Keagan t 1 in Science & Mathematics ➔ Chemistry
Fire
Rusting metal
2007-02-07 09:07:01 · answer #1 · answered by Skyhawk 5 · 0⤊ 1⤋
A chemical change is anything thing that changes the identity of a substance, so an example would be a chemical reaction (2 or more elements bonding together).
2007-02-07 17:18:04 · answer #2 · answered by autumnleaves1990 2 · 0⤊ 1⤋
if theres a change in color (burning) or any change thats irreversible its a good chance that its chemical.
2007-02-07 17:08:49 · answer #3 · answered by Professor Dopetastic Rockefeller 3 · 0⤊ 0⤋
first, a chemical change is the one were the atomic structure is changed, so, water turning into ice is just a phisical change.
an example: FeO+CO-->Fe+CO2
ALSO: Fe3O4+CO-->3Fe0+CO2
forgive my english.
2007-02-07 17:24:23 · answer #4 · answered by Anonymous · 0⤊ 2⤋
Freeze water, chemicaly changed to ice.
2007-02-07 17:12:25 · answer #5 · answered by Marty N 2 · 0⤊ 1⤋
-add vinegar to a glass of water with some baking soda in it.
-yeast working on sugars in bread dough
-yeast with sugars to make alcohol
2007-02-07 17:09:26 · answer #6 · answered by waynebudd 6 · 0⤊ 1⤋
Burning wood turning to charcoal.
2007-02-07 17:07:04 · answer #7 · answered by Thaumaturgist 2 · 0⤊ 1⤋