Chemical Reactions

Front

What is a chemical reaction?

Back

A process where substances (reactants) are transformed into different substances (products) through the breaking and forming of chemical bonds.

Front

What are reactants in a chemical equation?

Back

The starting substances that undergo a chemical change, found on the left side of the equation.

Front

What are products in a chemical equation?

Back

The substances formed as a result of a chemical reaction, found on the right side of the equation.

Front

What does the arrow in a chemical equation represent?

Back

It indicates the direction of the reaction, showing that reactants yield products.

Front

What is evidence of a chemical reaction?

Back

Signs such as fizzing, color change, temperature change, or the formation of a precipitate.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, such as digestion or combustion.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition, such as melting or freezing.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

Front

What is a balanced chemical equation?

Back

An equation where the number of atoms for each element is the same on both sides, ensuring mass is conserved.

Front

What is a catalyst?

Back

A substance that speeds up a chemical reaction without being consumed in the process.