Chemical Equation Test

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products along with their quantities.

Front

What does it mean to balance a chemical equation?

Back

Balancing a chemical equation means ensuring that the number of atoms of each element is the same on both sides of the equation.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

What is a decomposition reaction?

Back

A decomposition reaction is a type of chemical reaction where one compound breaks down into two or more simpler products.

Front

What is a double-displacement reaction?

Back

A double-displacement reaction is a reaction where two compounds exchange ions to form two new compounds, often producing a gas, solid precipitate, or molecular compound.

Front

How do you identify an unbalanced equation?

Back

An unbalanced equation has a different number of atoms for one or more elements on each side of the equation.

Front

What is a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex compound.

Front

What is a single replacement reaction?

Back

A single replacement reaction is a reaction where one element replaces another element in a compound.

Front

What is the significance of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in the reaction, helping to balance the equation.

Front

What is the role of subscripts in chemical formulas?

Back

Subscripts indicate the number of atoms of each element in a molecule; for example, in H2O, the '2' indicates there are two hydrogen atoms.