Chemical reactions occur in respiration, photosynthesis, and more life processes. Respiration and photosynthesis are both essential for life to exist.
Endothermic reactions need heat.
Not all chemical reactions require water. While many reactions may occur in the presence of water, there are also reactions that take place in other solvents or under dry conditions. The presence of water can often act as a catalyst or a medium for facilitating certain reactions, but it is not a universal requirement for all chemical reactions.
Candle and all Chemical reactions
no
No, chemical reactions do not require gravity to occur. Chemical reactions involve the rearrangement of atoms and molecules, which can happen in the absence of gravity. Gravity may influence the rate or behavior of certain reactions on Earth, but it is not necessary for the reactions themselves.
You need to be more specific with this question, forced chemical reactions? What happens to the patron? What happens to the drink?
The question is quite vague, as there are many chemical reactions and none are specified, so the two chemical reactions must be specified before an answer can be given.
These are not chemical reactions but thermonuclear reactions.
Candle and all Chemical reactions
Chemical reactions are abbreviated by their chemical equations.
All chemical reactions need a certain amount of activation energy to get started.
All atoms involved in a chemical reaction have an atomic nucleus.