chemical reactions and equations

Front

What is a chemical reaction?

Back

A chemical reaction is a process in which substances (reactants) are transformed into different substances (products) through the breaking and forming of chemical bonds.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of atoms of each element on both sides of the equation, ensuring the law of conservation of mass is upheld.

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, showing the ratio of reactants to products.

Front

What is the difference between a synthesis reaction and a decomposition reaction?

Back

A synthesis reaction combines two or more substances to form a new compound, while a decomposition reaction breaks down a compound into simpler substances.

Front

What is a single replacement reaction?

Back

A single replacement reaction occurs when one element replaces another in a compound, resulting in a new element and a new compound.

Front

What is a double replacement reaction?

Back

A double replacement reaction involves the exchange of ions between two compounds, forming two new compounds.

Front

What is combustion?

Back

Combustion is a chemical reaction that occurs when a substance reacts rapidly with oxygen, producing heat and light, typically resulting in carbon dioxide and water.

Front

What are reactants in a chemical reaction?

Back

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

Front

What are products in a chemical reaction?

Back

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

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.