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Chemical Equations and Bonding

Chemical Equations and Bonding. Thermal Decomposition Breaking bonds with heat . Copy down the following equations in your book. Underline the reactants and circle the products in each of the equations: Magnesium + Oxygen Magnesium oxide

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Chemical Equations and Bonding

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  1. Chemical Equations and Bonding Thermal Decomposition Breaking bonds with heat

  2. Copy down the following equations in your book. Underline the reactants and circle the products in each of the equations: Magnesium + Oxygen Magnesium oxide Calcium carbonate Calcium Oxide + Carbon dioxide Iron + Bromine Iron bromide Aluminium + Chlorine Aluminium Chloride Iron + Oxygen Iron oxide Lead oxide + Carbon Lead + Carbon dioxide

  3. Draw a line between the molecule and its name. Hydrogen chloride HCl Chlorine Cl2 Carbon dioxide CO2 Methane CH4

  4. Chemical Reactions Objectives: 1. The formula of a compound shows the number and the type of atoms in it. 2. A small number after the symbol for each element in a compound shows how many atoms each molecule contain.

  5. Draw a line between the compound and its name: MgCl2 Magnesium Carbonate NaCl Zinc Fluoride Pb(NO3)2 Magnesium Chloride FeS Iron sulphide CaCO3 Lead nitrate CuSO4 Copper sulphate ZnF2 Potassium Iodide MgCO3 Sodium Chloride KI Calcium Carbonate

  6. 1. How many atoms of Hydrogen in one molecule of Methane CH4 ? 2. How many atoms of Nitrogen in one molecule of Lead nitrate Pb(NO3)2 ? 3. Sodium oxide has two atoms of sodium for every atom of oxygen. What is the formula for sodium oxide? 4. Magnesium chloride has one atom of Magnesium for every two atoms of chlorine. What is the formula for Magnesium chloride? 5. How many atoms of Nitrogen in one molecule of Ammonia NH3 ?

  7. How many atoms of Oxygen is there is two molecules of CuSO4 ? • 1 b. 4 c. 6 d. 8 • 2. Oxygen will: • turn limewater milk b. relight a glowing splint • c. burn with a squeaky pop d. put out a glowing splint • 3. How many atoms are there altogether in one molecule of MgCl2 ? • 2 b. 3 c. 4 d. 6

  8. Chemical Reactions Objectives:1. The number of atoms in the reactants are equal to the number of atoms in the products.

  9. Mg + 2 HCl MgCl2 + H2 • What are the reactants of the above reaction? • What are the products?

  10. Mg + 2 HCl MgCl2 + H2 Give me your Chlorine and get out of here. Mg H H Cl Cl

  11. Mg + CuO MgO + Cu Give me your Oxygen and get out of here. Oxygen Mg Cu

  12. Thermal Decomposition Objective: Compounds can be broken down into smaller substances using heat.

  13. Test for gases Draw a line between the name of the gas and the method to test for it. relights a glowing splint Carbon dioxide burns with a squeaky pop Oxygen Hydrogen turns limewater cloudy

  14. Investigating whether a mystery substance is an element or a compound. mystery substance ? element compound metal non-metal

  15. What do you think the mystery substance is ??? thermal decomposition CuO + CO2 …………………..

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