The right answer is B)
Photosynthesis equation:
6CO2 + 6H2O + Sunlight > 6O + C6H12O6
Wow that is a lot of reading. You should be wise and do it yourself. To much sorry .
Answer:
A theory. Theories explain a phenomnon while laws state a phenomenon but do not explain them. Ex: Theory of evolution by Darwin explains how evolution works, while the law of thermodynamics states what occurs, but offers no interpreation of its meaning.
Explanation:
(D), amount of time and area of physical contact between the substances
A chemical change is a change in which the composition of the matter is changed at the molecular level, most chemical changes are not easily irreversible, for example, an egg being cooked, the egg changes from its liquid like state to a solid, and it is not possible to revert it back to its original change. The egg itself is changed in this case.
A physical change on the other hand however, is only changing the substance of a matter, not its composition, this is usually easily reversible. For example, water turning into ice, the water's substance changed from its liquid state to its solid state, it is still water, and it can easily be turned back into water by heating it.
Sorry for the long explanation,
Hope this helps!
