Question

Chemical equilibrium is reached when _____. hints chemical equilibrium is reached when _____. all of the reactants are converted to products the reverse reaction begins to occur matter is conserved the rate at which matter is destroyed and the rate at which it is created offset each other the forward and reverse reactions occur at the same rate so that the concentrations of reactants and products remain the same

Answer 1

Chemical equilibrium is a condition where the rate of product made is same as the rate of reactant made. Since the reaction to the left is same as the reaction to the right, so the amount of reactant and product will not be changed (doesn't mean that the amount is same, it just won't increase or decrease).
It's called equilibrium since there will be no change in their amount.