chemical equations basics

Front

What does the principle of conservation of mass state in chemical reactions?

Back

Matter is not created or destroyed.

Front

How many Hydrogen (H) atoms are present in the molecule NH₃O5?

Back

3

Front

How many molecules of KNO₃ are represented if there are 2 units shown?

Back

2

Front

Define a molecule in the context of chemistry.

Back

A molecule is more than one atom bonded together.

Front

What is the Law of Conservation of Matter?

Back

Matter cannot be created or destroyed; it only changes form.

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What are reactants in a chemical reaction?

Back

Substances that undergo change during a chemical reaction.

Front

What are products in a chemical reaction?

Back

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

Front

What does it mean to balance a chemical equation?

Back

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

Front

What is the significance of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in the reaction.