The Law of Conservation of Mass

What does the Law of Conservation of Mass state?

• Matter cannot be created or destroyed.

• Matter can be created but not destroyed.

• Matter can be destroyed but not created.

• Matter can be both created and destroyed.

Tags

NGSS.MS-PS1-5

In a chemical reaction, what happens to the atoms of the reactants?

• They are rearranged to form new substances.

• They are destroyed and new atoms are created.

• They disappear completely.

• They remain unchanged.

Tags

NGSS.MS-PS1-5

What are the reactants in the process of photosynthesis according to the passage?

• Carbon dioxide and water

• Glucose and oxygen

• Sunlight and glucose

• Oxygen and water

Tags

NGSS.MS-LS1-6

Why does matter seem to disappear during some experiments, according to the passage?

• It changes form, such as into a gas.

• It is destroyed during the reaction.

• It is absorbed by other substances.

• It becomes invisible due to chemical changes.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the product of photosynthesis as mentioned in the passage?

• Glucose

• Carbon dioxide

• Water

• Oxygen

Tags

NGSS.MS-LS1-6

In the equation, the 2 in N_2​ is the (a)   ​ (b)   ​ (c)   ​ (d)  

• subscript
• coefficient
• atomic number
• atomic mass