Law of Conservation of Mass/Counting Atoms

Front

What is the definition of a chemical equation?

Back

A chemical equation uses chemical symbols and numbers to describe what happens in a chemical reaction.

Tags

NGSS.MS-PS1-1

Front

What does the Law of Conservation of Mass state?

Back

The Law of Conservation of Mass states that matter cannot be created nor destroyed during chemical reactions.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the chemical formula for water?

Back

The chemical formula for water is H₂O.

Tags

NGSS.MS-PS1-1

Front

How many oxygen atoms are present in the product side of a balanced chemical equation if the answer is 18?

Back

There are 18 oxygen atoms on the product side.

Tags

NGSS.MS-PS1-5

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Front

What is the role of coefficients in a chemical equation?

Back

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

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

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

Tags

NGSS.MS-PS1-1

Front

What is the significance of balancing a chemical equation?

Back

Balancing a chemical equation ensures that the number of atoms for each element is the same on both sides of the equation, adhering to the Law of Conservation of Mass.

Tags

NGSS.MS-PS1-5

Front

What is the general equation for photosynthesis?

Back

The general equation for photosynthesis is 6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3