Word and Skeleton Equations

What is the word equation for the reaction between hydrogen and oxygen to form water?

• Hydrogen + Oxygen -> Water

• Hydrogen + Water -> Oxygen

• Oxygen + Water -> Hydrogen

• Water -> Hydrogen + Oxygen

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is the correct skeleton equation for the combustion of methane?

• @@ ext{CH}_4 + ext{O}_2 ightarrow ext{CO}_2 + ext{H}_2 ext{O}@@

• @@ ext{CH}_4 + 2 ext{O}_2 ightarrow ext{CO}_2 + 2 ext{H}_2 ext{O}@@

• @@ ext{CH}_4 + ext{O}_2 ightarrow ext{CO}_2 + ext{H}_2@@

• @@ ext{CH}_4 + 2 ext{O}_2 ightarrow 2 ext{CO}_2 + 2 ext{H}_2 ext{O}@@

Tags

NGSS.MS-PS1-5

In a chemical reaction, what does a skeleton equation represent?

• The balanced chemical equation

• The unbalanced chemical equation

• The word equation

• The ionic equation

What is the word equation for the reaction of sodium with water?

• Sodium + Water -> Sodium Hydroxide + Hydrogen

• Sodium + Water -> Sodium Oxide + Hydrogen

• Sodium + Water -> Sodium Chloride + Oxygen

• Sodium + Water -> Sodium + Oxygen

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is a balanced skeleton equation for the reaction of iron with oxygen to form iron(III) oxide?

• @@ ext{Fe} + ext{O}_2 ightarrow ext{Fe}_2 ext{O}_3@@

• @@4 ext{Fe} + 3 ext{O}_2 ightarrow 2 ext{Fe}_2 ext{O}_3@@

• @@2 ext{Fe} + ext{O}_2 ightarrow ext{Fe}_2 ext{O}_3@@

• @@3 ext{Fe} + 2 ext{O}_2 ightarrow ext{Fe}_2 ext{O}_3@@

Tags

NGSS.MS-PS1-5

What is the word equation for the decomposition of water?

• Water -> Hydrogen + Oxygen

• Water -> Oxygen + Hydrogen Peroxide

• Water -> Hydrogen Peroxide + Oxygen

• Water -> Hydrogen + Carbon Dioxide

Tags

NGSS.MS-PS1-5

Which of the following represents the skeleton equation for the reaction of hydrochloric acid with sodium hydroxide?

• @@ ext{HCl} + ext{NaOH} ightarrow ext{NaCl} + ext{H}_2 ext{O}@@

• @@ ext{HCl} + ext{NaOH} ightarrow ext{Na} + ext{Cl}_2 + ext{H}_2 ext{O}@@

• @@ ext{HCl} + ext{NaOH} ightarrow ext{NaCl} + ext{H}_2@@

• @@ ext{HCl} + ext{NaOH} ightarrow ext{Na} + ext{Cl} + ext{H}_2 ext{O}@@

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

What is the word equation for the reaction of calcium carbonate with hydrochloric acid?

• Calcium Carbonate + Hydrochloric Acid -> Calcium Chloride + Water + Carbon Dioxide

• Calcium Carbonate + Hydrochloric Acid -> Calcium Hydroxide + Water + Carbon Dioxide

• Calcium Carbonate + Hydrochloric Acid -> Calcium Oxide + Water + Carbon Dioxide

• Calcium Carbonate + Hydrochloric Acid -> Calcium + Water + Carbon Dioxide

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is the correct skeleton equation for the reaction of zinc with sulfuric acid?

• @@ ext{Zn} + ext{H}_2 ext{SO}_4 ightarrow ext{ZnSO}_4 + ext{H}_2@@

• @@ ext{Zn} + ext{H}_2 ext{SO}_4 ightarrow ext{Zn} + ext{SO}_4 + ext{H}_2@@

• @@ ext{Zn} + ext{H}_2 ext{SO}_4 ightarrow ext{ZnSO}_4 + ext{H}_2 ext{O}@@

• @@ ext{Zn} + ext{H}_2 ext{SO}_4 ightarrow ext{ZnSO}_4 + ext{O}_2@@

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the word equation for the reaction of magnesium with oxygen?

• Magnesium + Oxygen -> Magnesium Oxide

• Magnesium + Oxygen -> Magnesium Hydroxide

• Magnesium + Oxygen -> Magnesium Chloride

• Magnesium + Oxygen -> Magnesium Carbonate

Tags

NGSS.MS-PS1-5