Equilibrium

In science, our word for balance is ___

• harmony

• symmetry

• hysteresis

• equilibrium

When the balance of some natural system gets disrupted, we say that it's ___

• in a hysteresis loop

• out of equilibrium

• polarized

• asymmetric

When reactants react to form products, it's technically called ___

• the forward reaction

• the reverse reaction

• an opposite reaction

• combustion

When the products change back into the reactants, we call this ___

• a forward reaction

• a reverse reaction

• a spontaneous reaction

• sublimation

When the forward and reverse reactions occur at the same rate, that's called ___

• mass balance

• two-part harmony

• chemical equilibrium

• reactant solidarity

Which German chemist developed a process for making ammonia from nitrogen in the air?

• Robert Bunsen

• Fritz Haber

• Otto Hahn

• Friedrich Wöhler

An equilibrium is reached when the forward and reverse processes of a reaction happen ____

• simultaneously

• alternately

• at their maximum rates

• at the same rate

Because an equilibrium process runs in both directions, and never stops, the equation is written with ___

• a double arrow

• an infinity symbol

• an approximation sign

• a zig-zag pointer

We say a change shifts the reaction to the right if it tends to ___

• make more reactants form

• make more products form

• increase the molar concentration

• decrease the molar concentration

We say a change shifts the reaction to the left if it tends to ___

• make more reactants form

• make more products form

• decrease the number of moles

• increase the number of moles