LOCOM

Front

What are the reactants in the chemical equation 2H₂ + O₂ → 2H₂O?

Back

2H₂ + O₂

Front

What does the Law of Conservation of Mass state?

Back

Matter is neither created nor destroyed.

Front

How many elements are present in the compound Mg₂As₃COHNi₂?

Back

6

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What is the significance of balancing a chemical equation?

Back

To ensure that the number of atoms of each element is the same on both sides of the equation.

Front

What is meant by 'reactants' in a chemical reaction?

Back

Substances that undergo a chemical change during a reaction.

Front

What are 'products' in a chemical reaction?

Back

Substances that are formed as a result of a chemical reaction.

Front

Can mass be created or destroyed in a chemical reaction according to the Law of Conservation of Mass?

Back

No, mass cannot be created or destroyed.

Front

What is the purpose of a chemical formula?

Back

To convey the composition of a substance using symbols for its constituent elements.

Front

What is the difference between an element and a compound?

Back

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