Front

What are reactants in a chemical reaction?

Back

Reactants are the starting substances that undergo a chemical change in a reaction.

Front

What does the law of conservation of mass state?

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 chemical equation?

Back

A chemical equation is a representation of a chemical reaction using symbols to show the relationship between reactants and products.

Front

What is the mass of a solution if 20g of sugar is dissolved in 100g of water?

Back

The mass of the solution is 120g.

Front

What is a product in a chemical reaction?

Back

Products are the substances formed as a result of a chemical reaction.

Front

How do you calculate the total mass of a solution?

Back

To calculate the total mass of a solution, add the mass of the solute (e.g., sugar) to the mass of the solvent (e.g., water).

Front

What is the difference between a chemical formula and a chemical equation?

Back

A chemical formula represents the composition of a substance, while a chemical equation shows the reactants and products in a chemical reaction.

Front

What does it mean for a chemical reaction to be balanced?

Back

A balanced chemical reaction has the same number of each type of atom on both sides of the equation, reflecting the conservation of mass.

Front

What is the role of coefficients in a chemical equation?

Back

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

Front

What is the significance of the arrow in a chemical equation?

Back

The arrow in a chemical equation indicates the direction of the reaction, showing the conversion of reactants to products.