Not sure.
test its solubitlity by seeing if it dissolves in a solution
No, absolutely not. There are much smaller particles, first Electrons (which are part of reactions), Then Quarks that neutrons and protons are made of (and are part of reactions), and much, much smaller particles after that also are involved in chemical reactions.
Enzymes are Proteins that speed up chemical reactions.
Assuming that you are referring to chemical reactions, we know that atoms are not changed by chemical reactions (except for their oxidation states). That means that all the same types of atoms are present after the reactions as were there before the reactions. The type of an atom is determined by the number of protons in its nucleus.
It is a quantitative relationship between the reactants and products based on the chemical reactions that is balanced.
These are not chemical reactions but thermonuclear reactions.
Heat energy is necessary for some chemical reactions to occur. Some chemical reactions are endothermic meaning they require or absorb energy for a chemical reaction to occur. Other chemical reaction are exothermic meaning they release energy when the chemical reaction takes place..
Chemical reactions are abbreviated by their chemical equations.
The Arrhenius equation describes a number of temperature dependent chemical reactions. These comprise not just the forward and reverse reactions, but also other reactions that are thermally influenced such as diffusion processes.
enzymes helps control chemical reactions by the chemical in it called collagen when enzymes enter your body they create a chemical reactions and controls the chemical reactions you get by eating too much acids.
4 useful chemical reactions are: fermentation, smelting combustion and electrolysis
stoichiometry is very important in chemical equations because it tells you the relationship between substances in the same chemical equation. If you know the properties and relationship of one substance in the equation, you can calculate the relationships between all the substances in the equation.