This video tutorial covers the fundamentals of balancing chemical equations, emphasizing the conservation of mass. It explains the role of coefficients in balancing equations and provides a step-by-step method using the MINO approach. The tutorial includes examples with hydrocarbons, chlorine, sulfur, oxygen, and polyatomic ions, demonstrating how to balance equations effectively.

What principle states that the mass of reactants must equal the mass of products in a chemical reaction?

• Avogadro's Law

• Conservation of Mass

• Law of Multiple Proportions

• Law of Definite Proportions

Tags

NGSS.HS-PS1-7

In a balanced chemical equation, what is the purpose of a coefficient?

• To change the identity of the compound

• To balance the number of atoms on each side of the equation

• To show the temperature at which the reaction occurs

• To indicate the phase of the compound

Where can you place a coefficient in a chemical equation?

• As a subscript in a compound

• At the end of a compound

• In the middle of a compound

• In front of a compound or element

What is the first step in the MINO method for balancing equations?

• Balance the nonmetals

• Balance the metals

• Find the most complicated compound and put a 1 in front of it

• Balance the polyatomic ions

In the MINO method, what should you balance after metals?

• Polyatomic ions

• Hydrogen

• Oxygen

• Nonmetals

When balancing the equation C10H16 + Cl2 → C + HCl, what is the coefficient for HCl?

• 16

• 10

• 8

• 1

In the equation S8 + O2 → SO3, what coefficient should be placed in front of O2 to balance the equation?

• 24

• 8

• 12

• 16

Tags

NGSS.HS-PS1-7

When balancing Na2SO4 + H2SO4 → Na2SO4 + H2, what is the coefficient for H2?

• 2

• 1

• 3

• 4

Tags

NGSS.HS-PS1-7

In the equation C7H16 + O2 → CO2 + H2O, what is the coefficient for O2?

• 8

• 7

• 11

• 14

In the equation H3AsO4 + H2S → As2S3 + H2O, what is the coefficient for H2O?

• 3

• 4

• 6

• 8

Tags

NGSS.HS-PS1-7