Balancing and Types of Reactions

Front

What is the general form of a balanced chemical equation?

Back

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

Front

What does the coefficient in a chemical equation represent?

Back

The coefficient indicates the number of moles of a substance involved in the reaction.

Front

What is a precipitation reaction?

Back

A precipitation reaction occurs when two aqueous solutions react to form an insoluble solid, known as a precipitate.

Front

What are the signs that a chemical change has occurred?

Back

Signs of a chemical change include color change, gas production (bubbling), temperature change, and the formation of a precipitate.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products to ensure the same number of each type of atom on both sides.

Front

What does (s) indicate in a chemical equation?

Back

The (s) indicates that the substance is a solid, often referring to a precipitate formed in a reaction.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance without changing its chemical composition, while a chemical change results in the formation of new substances.

Front

What is the role of acids and bases in chemical reactions?

Back

Acids donate protons (H+) in reactions, while bases accept protons, often leading to neutralization reactions.

Front

What is the significance of temperature change in a chemical reaction?

Back

Temperature change can indicate whether a reaction is exothermic (releases heat) or endothermic (absorbs heat).

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.