2007-02-04 13:03:01 · 3 answers · asked by Ali 3 in Science & Mathematics ➔ Chemistry
Cooking is not chemical, because it heats stuff up, and the chemical composition remains the same. This is not true for baking, however. Water turning from a liquid to a solid is freezing, again another physical change. It is not chemical because the composition of the water remains the same.
2007-02-04 13:07:42 · answer #1 · answered by Evil Genius 3 · 0⤊ 0⤋
Water is a chemical substance through having 2 atoms of Hydrogen Chemically mixed with a million atom of Oxygen in each of its molecules. it extremely is modern in nature in all actual states as, good (Ice), Liquid (Water) and gas (Vapour). there is no different substance like water. Water is unique in its chemical and actual homes in that at 4°C, it extremely is at its maximum Density (a million,000kg/m³). while heated above, or cooled below, 4°C, water expands and is the only substance understand to have this supplies.
2017-01-02 08:41:48 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Cooking is a chemical reaction, yes. (Actually, it's normally a whole stack of concurrent reactions.)
Water freezing is not, since the molecules are H2O before and after.
2007-02-04 13:06:33 · answer #3 · answered by Scarlet Manuka 7 · 0⤊ 0⤋