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

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Presentation transcript:

Word Equations Form 3G St. Mary´s College

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

? Lead oxide + Carbon Lead + Carbon Dioxide Reactants Products

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

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

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

Periodic Table of the Elements

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