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

How many elements are in the chemical formula C6H12O6?

Back

3 (Carbon, Hydrogen, and Oxygen).

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

How many hydrogen atoms are in the chemical formula C4H10?

Back

10 hydrogen atoms.

Front

How many oxygen atoms are in the chemical formula Al₂(SO₄)₃?

Back

12 oxygen atoms.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it remains constant.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.

Front

What is a balanced chemical equation?

Back

An equation that has the same number of each type of atom on both sides, indicating that mass is conserved.