Chemical Reactions CFU

A process in which substances (reactants) undergo a transformation to form new substances (products).

In a chemical reaction, mass is neither created nor destroyed; it remains constant.

A type of reaction where a single compound breaks down into two or more simpler products. Example: $$2KI -> 2K + I_2$$ .

A reaction where one element replaces another in a compound. Example: $$Zn + 2HCl -> ZnCl_2 + H_2$$ .

A reaction where two compounds exchange ions or bonds to form two new compounds.

A reaction where two or more substances combine to form a single product.

A reaction that occurs when a substance combines with oxygen, releasing energy in the form of light and heat.

A chemical equation is balanced when the number of atoms of each element is the same on both sides of the equation.

Particles rearrange to form new substances, and some may escape as gases, leading to changes in mass.

Heat can provide energy to initiate reactions or can be released during exothermic reactions.