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Chemistry Word Equations Guide

This document provides information and examples to help students write balanced word equations confidently from chemical reactions. It includes: 1. Examples of word equations and their reverse reactions for electrolysis of water and combustion of hydrogen and oxygen. 2. Practice writing word equations for 5 common reactions given the reactants and products. 3. More practice writing word equations for 3 example chemical reactions where some information is missing.

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110 views6 pages

Chemistry Word Equations Guide

This document provides information and examples to help students write balanced word equations confidently from chemical reactions. It includes: 1. Examples of word equations and their reverse reactions for electrolysis of water and combustion of hydrogen and oxygen. 2. Practice writing word equations for 5 common reactions given the reactants and products. 3. More practice writing word equations for 3 example chemical reactions where some information is missing.

Uploaded by

JohnRenzoMolinar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PPT, PDF, TXT or read online on Scribd
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4 September 2020

Word Equations

NL: Confidence in writing word equations from:


-Information about a reaction [C]
-Sentences talking about a reaction [C/B]
-Reactions with ‘missing bits!’ [B]
-Balanced equations [A]
How do we write the word equation for this?

Water  Hydrogen + Oxygen

Hydrogen + Oxygen  Water


Use the following information to make word equations –confidently!
1.The electrolysis of water makes hydrogen and oxygen.
2.The combustion of hydrogen and oxygen makes water.
3.The electrolysis of salt water (or sea water) makes chlorine and
hydrogen.
4.The combustion of carbon in oxygen makes carbon dioxide.
5.The combustion of glucose makes carbon dioxide and water.
OK, let’s try some exam-style questions! Write a word equation for the
following (example one is partly done to help you):
1.During an experiment carbon dioxide was produced by the
combustion of pure carbon.
Carbon + ________  Carbon Dioxide
2.When a reaction between Iron and Sulfur takes place the products is
Iron Sulfide, the reactants are Iron and Sulfur.
3.A scientist produced two gases by putting electrodes into water, one
was oxygen the other was hydrogen.
Use the following information to make word equations
–confidently!

•Water  Hydrogen + Oxygen


•Hydrogen + Oxygen  Water
•Sea Water  Chlorine + Hydrogen
•Carbon + Oxygen  Carbon Dioxide
•Glucose + Oxygen  Carbon Dioxide + Water

OK, let’s try some exam-style questions! Write a word equation for the following
(example one is partly done to help you):

1.Carbon + Oxygen  Carbon Dioxide

2.Iron + Sulfur  Iron Sulfide

1.Water  Oxygen + Hydrogen

Next – See if you can guess the missing words from the next exmples!
‘Missing’ Word Equations
Fill in the gaps in these word equations to make them complete. If there is no
reaction write this in the gap.

1.Magnesium + Oxygen  _______________


2.Iron + Water (steam)  ______Oxide + Hydrogen
3.Silver + Water (steam)  __________ + __________
4.Calcium + _________Acid  Calcium Chloride + Hydrogen
5.________ + Sulphuric Acid  Sodium Sulphate + Hydrogen
6.Calcium + Oxygen  _______________
7.Copper Chloride + Magnesium  ________________ + Copper
8.Silver Nitrate + Iron  __________+_______
9.Gold + Oxygen  _________
10.Iron sulphate + Copper ___________
11._____ + Nitric Acid  Zinc Nitrate + _______
‘Missing’ Word Equation - Solutions
Fill in the gaps in these word equations to make them complete. If there is no
reaction write this in the gap.

1.Magnesium + Oxygen  Magnesium Oxide


2.Iron + Water (steam)  Iron Oxide + Hydrogen
3.Silver + Water (steam)  Silver Oxide + Hydrogen
4.Calcium + Hydrochloric Acid  Calcium Chloride + Hydrogen
5.Sodium + Sulphuric acid  Sodium Sulphate + Hydrogen
6.Calcium + oxygen  Calcium Oxide
7.Copper chloride + Magnesium  Magnesium Chloride + Copper
8.Silver Nitrate + Iron  Iron Nitrate + Silver
9.Gold + Oxygen  No Reaction!!
10.Iron sulphate + Copper  No Reaction!!
11.Zinc + Nitric Acid  Zinc Nitrate + Hydrogen

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