IC2 Chemical Equations

In every chemical reaction, the mass of the products is always ____________________________.

• slightly less than the mass of the reactants

• much less than the mass of the reactants

• the same as the mass of the reactants

• greater than the mass of the reactants

Tags

NGSS.MS-PS1-5

How many carbon atoms are present in this chemical equation?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

The right side of this equation is called ________________.

• products

• reactants

Tags

NGSS.MS-PS1-2

In chemical reactions, what does the Law of Conservation of Mass mean?

• Matter is not created or destroyed.

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

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

• Matter is not changed.

Tags

NGSS.MS-PS1-5

Is this chemical equation balanced?

• Yes

• No

Tags

NGSS.MS-PS1-5

What is a coefficient?

• The small number on the right of the chemical symbol.

• The large number in front of a chemical formula.

• The number in between the chemical symbols.

• The number behind a chemical formula.

Tags

NGSS.MS-PS1-5

How many molecules are shown in this chemical formula?

• 1

• 2

• 3

• 4

In a chemical reaction, Reactant A has 5 g and Reactant B has 9 g. How many grams should Product C have?

• 4 g

• 5 g

• 9 g

• 14 g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In a chemical reaction, Reactant A has 5 g and Product C has 9 g. How many grams should Reactant B have?

• 4 g

• 5 g

• 9 g

• 14 g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of these formulas contain equal numbers of nitrogen atoms?

• Formulas I and III

• Formulas I and IV

• Formulas II and III

• Formulas I, II, and V

Tags

NGSS.MS-PS1-1