Writing and Balancing Chemical Equations

Question 1

Question 1

Revolt · Accepted Answer

hydrogen + oxygen.; magnesium oxide.; carbon dioxide + water

Question 2

A bright light is produced when magnesium reacts with the oxygen in air to form magnesium oxide. The word equation that represents this reaction is: magnesium + oxygen magnesium.✔ magnesium oxide.oxygen.

Revolt · Accepted Answer

✔ magnesium oxide.

Question 3

When methane burns, it reacts with oxygen to produce water and carbon dioxide. The word equation that represents this reaction is: methane + oxygen hydrogen + carbongas + liquid✔ carbon dioxide + water

Revolt · Accepted Answer

✔ carbon dioxide + water

Question 4

Electrolysis breaks down water to form hydrogen and oxygen gas. The word equation that represents this reaction is: water ✔ hydrogen + oxygen.water + gas.water.

Revolt · Accepted Answer

✔ hydrogen + oxygen.; hydrogen + oxygen.; magnesium oxide.; carbon dioxide + water

Question 5

Propane burns in oxygen to produce carbon dioxide and water. What are the chemical formulas of the reactants and products?

Revolt · Accepted Answer

The formulas of the reactants are C3H8 and O2. The formulas of the products are CO2 and H2O.

Question 6

What is the chemical equation for the burning of propane if all the products and reactants are in the gas phase?

Revolt · Accepted Answer

C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g)

Writing and Balancing Chemical Equations Answers

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