The most obvious event to look for to indicate a chemical reaction is the production of heat. All chemical reactions produce heat.
There should be physical changes such as a color change, increase or decrease in temp, or formation of solid, liquid, or gas.
yes
the oxidation states have changed
You have to notice what happens during the reaction and what products have been obtained.
Only after the measurement of the reaction rate. See the link below for details.
The reaction is:C2H4O + HCN = C3H5NO
A chemical reaction is a reaction in which a substance is turned into another completely different substance
if oxidation states change, it is a redox reaction
Thermidorian Reaction happened in 1794.
The reaction is exothermic.
In general, and depending on the order of the reaction, the rate will decrease as the reaction progresses.
The reaction is endothermic.
the reaction is exothermic
The reaction is exothermic.
You are the only person who can tell YOUR reaction.
You need to calculate the yield of the reaction.
This is an endothermic chemical reaction.
You can generally tell by changes in temperature, whether you have an exothermic reaction which produces heat, or an endothermic reaction which consumes heat.