1. Word Equations Form 3G 2006-2007 St. Mary´s College

2. Todays Lesson Reviewing Unit H1 and Unit H2 Products from Reactions Unit H3 – Reactions in Balance Writing Word Equations About Compounds..

3. ? Lead oxide + Carbon Lead + Carbon Dioxide Reactants Products

4. Rules for writing Word equations 1. If a metal and a non-metal are added togheter the ending is usually –ide. Iron + Oxygen Iron Oxide Magnesium + Oxygen Magnesium Oxide

5. Rules for writing Word equations 3. When a metal and acid are added, a salt and hydrogen are produced. Magnesium+Sulphuric Acid Magnesium Sulphate +Hydrogen Magnesium+Sulphuric Acid Magnesium Sulphate +Hydrogen Zinc + Hydrochloric Acid Zinc + Hydrochloric Acid Zinc Chloride + Hydrogen

6. Rules for writing Word equations 4. When a carbonate and acid are added, CO 2, salt and H 2 0 formed: Iron Carbonate + Hydrochloric Acid Iron Chloride + CO 2 + H 2 0

7. Periodic Table of the Elements

8. About Compounds... A compound is a chemical substance consisting of two or more different chemically bonded chemical elements. A compound is a chemical substance consisting of two or more different chemically bonded chemical elements. Magnesium Sulphate MgSO 4 1 element of magnesium 1 element of sulphate 4 elements of oxygen