Law of Conservation of Mass

Front

What does the Coefficient (3) in the Chemical Formula, 3H₂O, indicate?

Back

It indicates the number of Molecules of Water.

Front

In the chemical formula C_{12}H_{22}O_{11}, how many C atoms are present?

Back

12

Front

Which of the following substances cannot be broken down into simpler substances: Na, H₂O, C₆H₁₂O₆, CO?

Back

Na

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be created nor destroyed; it can only be transformed or changed.

Front

What happens to the total mass of substances after a chemical reaction?

Back

It remains the same.

Front

Define the Law of Conservation of Mass.

Back

The principle stating that the total mass of reactants in a chemical reaction equals the total mass of products.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

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.

Front

Give an example of a chemical reaction that demonstrates the Law of Conservation of Mass.

Back

The reaction of hydrogen and oxygen to form water: 2H₂ + O₂ → 2H₂O.

Front

What is a chemical formula?

Back

A representation of a substance using symbols for its constituent elements and numbers to indicate the ratio of atoms.