(Q2) Unit 3 - Conservation of Mass

Which statement is true of the following chemical reaction?

• The mass of the reactants is less than the mass of the products.

• The mass of the reactants is greater than the mass of the products.

• The mass of the reactants is equal to the mass of the products.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which statement is true of the following chemical reaction?

• The mass of the reactants is less than the mass of the products.

• The mass of the reactants is greater than the mass of the products.

• The mass of the reactants is equal to the mass of the products.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which statement is true of the following chemical reaction?

• The mass of the reactants is less than the mass of the products.

• The mass of the reactants is greater than the mass of the products.

• The mass of the reactants is equal to the mass of the products.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which equation shows that the atoms are conserved in the chemical reaction?

• K + 3O₂ --> 2KO₃

• 3K + 3O₂ --> 6KO₃

• 2K + 3O₂ --> 2KO₃

• 4K + 2O₂ --> 2KO₃

Tags

NGSS.MS-PS1-5

Which of the following is true about this chemical reaction?

N₂ + 2H₂ --> NH₄

• The equation is balanced.

• There are more atoms in the reactants

• There are more atoms in the products

Tags

NGSS.MS-PS1-5

Which of the following is true about this chemical reaction?

N₂ + 2H₂ --> 2NH₄

• The equation is balanced.

• There are more atoms in the reactants

• There are more atoms in the products

Tags

NGSS.MS-PS1-5

Which of the following is true about this chemical reaction?

N₂ + 4H₂ --> 2NH₄

• The equation is balanced.

• There are more atoms in the reactants

• There are more atoms in the products

Tags

NGSS.MS-PS1-5

Which formula represents the molecules?

• 4CO₂

• C₄O₈

• 4C₄O₈

• CO₂

Tags

NGSS.MS-PS1-1

Which formula represents the molecules?

• 2CH₄

• CH₄

• C₂H₈

• 10CH₄

Tags

NGSS.MS-PS1-1

Are the atoms conserved in the following chemical reaction?

• Yes because the number of reactant atoms are equal to the product atoms.

• Yes because there are 3 molecules on both sides.

• No because the reactants have more atoms than the products.

• No because the molecules are different on the product side.

Tags

NGSS.MS-PS1-5