Reactions Unit Review 2024-2025

Front

What must a single element do to replace an element in a compound?

Back

It must be above it on the activity series.

Front

What is the name of the solid substance formed in a chemical reaction that is not soluble in water?

Back

Precipitate.

Front

What subscript should a diatomic element have when it is by itself?

Back

2, only when it is by itself.

Front

Which element is more reactive: Ag or Ca?

Back

Ca is more reactive than Ag.

Front

What do coefficients in a chemical equation represent?

Back

The ratio of elements/compounds in the balanced equation.

Front

What is the activity series?

Back

A list of elements organized by their reactivity, used to predict the outcomes of displacement reactions.

Front

Define a chemical reaction.

Back

A process where reactants are transformed into products, involving the breaking and forming of bonds.

Front

What is a diatomic molecule?

Back

A molecule composed of two atoms, which can be of the same or different elements.

Front

What is a precipitate?

Back

A solid that forms and settles out of a liquid mixture during a chemical reaction.

Front

What is the difference between an aqueous solution and a precipitate?

Back

An aqueous solution is a homogeneous mixture where a substance is dissolved in water, while a precipitate is an insoluble solid that forms from a reaction.