Balancing Chemical Reactions and Equations

What are the products of the reaction between hydrochloric acid (HCl) and zinc (Zn)?

• ZnO and HCl

• ZnCl2 and H2

• ZnCl and H2O

• ZnH2 and Cl2

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In the reaction between hydrochloric acid and zinc, what color is used to symbolize chlorine (Cl)?

• Red

• Yellow

• Green

• White

What is the coefficient of HCl when the reaction between hydrochloric acid and zinc is balanced?

• 2

• 4

• 3

• 1

Tags

NGSS.MS-PS1-5

What is the product of the reaction between hydrogen (H2) and oxygen (O2)?

• H2O2

• H2O

• O2H

• HO2

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

How many hydrogen atoms are there on the reactant side of the balanced equation for the reaction between hydrogen and oxygen?

• 2

• 4

• 6

• 8

Tags

NGSS.MS-PS1-5

What is the coefficient of H2O in the balanced equation for the reaction between hydrogen and oxygen?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

What is the product when carbon (C) and hydrogen (H2) react together?

• CH3

• C2H6

• CH4

• C2H4

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

How many hydrogen atoms are there in one molecule of methane (CH4)?

• 4

• 3

• 5

• 2

Tags

NGSS.MS-PS1-1

In the reaction to form methane (CH4), how many hydrogen molecules (H2) are needed to balance the equation?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

What is the balanced equation for the formation of methane (CH4) from carbon and hydrogen?

• C + 3H2 -> CH4

• C + H2 -> CH4

• C + 2H2 -> CH4

• C + 4H2 -> CH4

Tags

NGSS.MS-PS1-5