Chemical Rxns PRACTICE test

Front

What is a Double Replacement reaction?

Back

A chemical reaction where two compounds exchange ions to form two new compounds.

Front

What does it mean to balance a chemical equation?

Back

To ensure that the number of atoms of each element is the same on both sides of the equation.

Front

What are reactants in a chemical equation?

Back

Substances that undergo a chemical change in a reaction.

Front

What are products in a chemical equation?

Back

Substances that are formed as a result of a chemical reaction.

Front

What is the role of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in the reaction.

Front

What is the difference between subscripts and coefficients?

Back

Subscripts indicate the number of atoms in a molecule, while coefficients indicate the number of molecules.

Front

What is the activity series in chemistry?

Back

A list of metals arranged in order of decreasing reactivity.

Front

What does it mean if a reaction is 'already balanced'?

Back

It means that the number of atoms for each element is equal on both sides of the equation.

Front

Can you change subscripts when balancing equations?

Back

No, you can only change coefficients.

Front

What is the significance of the number '3' in the equation 3 NaOH + Fe(NO3)3?

Back

It indicates that there are three molecules of NaOH as reactants.