Conservation of Mass & Chemical Reactions.

In a chemical equation, the total number of atoms on the reactants' side is [BLANK] the total number of atoms on the products' side.

• Less Than

• Equal To

• Unrelated to

• Greater Than

Tags

NGSS.MS-PS1-5

This passage demonstrates the Law of [BLANK] of Mass.

Tags

NGSS.MS-PS1-5

The equation that represents Hydrogen reacting with Carbon Dioxide to form water is as follows:

CO₂ + 4H_2​ ⟶ CH_4​ + 2H_2​O

How many hydrogen atoms are in the products' side?

• 2

• 6

• 4

• 8

Tags

NGSS.HS-PS1-7

Balanced equations show that atoms are always [BLANK.]

• Created

• Duplicated

• Rearranged

• Destroyed

Tags

NGSS.MS-PS1-5

In Photosynthesis:

(6CO₂ + 6H₂O ⟶ C₆H₁₂O₆ + 6O₂)

How many Oxygen atoms are on the products' side?

• 18

• 6

• 12

• 8

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

TRUE OR FALSE:

Chemical reactions can change the type of atoms/elements that are present in a substance.

• True

• False

Tags

NGSS.MS-PS1-2

Carbonic acid (H_2​CO_3​) forms when Carbon Dioxide dissolves in water, usually found in soda.

How many total atoms are there in Carbonic acid?

• 2

• 3

• 5

• 6

Tags

NGSS.MS-PS1-1

Absorbic Acid, or Vitamin C, is an essential nutrient and antioxidant found in many fruits and vegetables:

C_6​H_8​O₆

How many Carbon atoms are there?

• 1

• 6

• 8

• 3

Tags

NGSS.MS-PS1-1

The symbol Na represents:

In Al₂O₃, how many total atoms are present?

• 3

• 2

• 5

• 6

Tags

NGSS.MS-PS1-1