The document discusses elements, compounds, and mixtures. It explains that elements contain only one type of atom, while compounds contain two or more different elements that are chemically bonded together. Mixtures contain elements or compounds mixed together but not chemically bonded. Seawater is described as a mixture of the compounds H2O and NaCl. The learning outcomes are to explain the differences between elements, compounds, and mixtures and how formulae indicate the number and type of atoms in compounds.

1. Look at the below chemical? What is it called and what elements does it contain? Friday, June 5, 2009

2. Learning Outcomes By the end of the lesson you should be able to: All Explain that elements contain 1 type of atom and compounds contain more than 1 joined together. MOST Describe the differences between compounds and mixtures SOME Describe that the formulae indicate the numbers of atoms in a compound Friday, June 5, 2009

3. Big Picture Friday, June 5, 2009

4. Big Picture Investigating Materials Introduction to elements Periodic Table Elements and Compounds Compounds and Mixtures Friday, June 5, 2009

5. Elements Contain only 1 type of atom Friday, June 5, 2009 Element 1 Element 2

6. Mixtures Elements can be mixed NOT JOINED to make a mixture Friday, June 5, 2009 Mixture 1

7. Mixtures Can be separated to get the elements Friday, June 5, 2009 Mixture 1 Element 1 Element 2

8. Mixtures Can be separated to get the elements NaCl Na Cl Sodium Chloride Sodium Chlorine

9. Compounds When two or more elements are joined together using energy (e.g. Heat) Friday, June 5, 2009 Element 1 Element 2 Compound

10. Elements Contain only 1 type of atom Friday, June 5, 2009 Compounds Mixture Contain 1 or more atoms JOINED Contain 1 or more atoms NOT JOINED

11. What is Seawater? Compound, element or Mixture? Friday, June 5, 2009 H 2 0 NaCl Mixture of Compounds

12. Learning Task You must write a report to the government. You should explain: Why water is needed? What is water made from? Why is a sea water a mixture? How seawater could be made to be drinkable? Friday, June 5, 2009

13. Level 3 Level 4 Level 5 Level 6 Uses little scientific words, names only 1 of the elements in water Uses some scientific words – like Hydrogen, oxygen, salt and mixture Uses scientific words like sodium Chlorine and some formula- like H 2 0. Describes a mixture. Uses formula like NaCl and science words like desalination

14. Learning Outcomes By the end of the lesson you should be able to: All Explain that elements contain 1 type of atom and compounds contain more than 1 joined together. MOST Describe the differences between compounds and mixtures SOME Describe that the formulae indicate the numbers of atoms in a compound Friday, June 5, 2009