Sorting Elements, Compounds, and Mixtures

1. Sorting Elements, Compounds, and Mixtures How can we tell the difference?

2. Make an organizer! • Label your paper at the top: Organizer: Sorting ECM • Make four columns like this:

3. What to do: • In the first column write a label for each set of facts. • Then write the given facts in the correct columns. • Get ready for the first one!

4. Label: Notation? • Symbols • Formulas • Lists

5. Label: Notation? • Symbols E • Formulas C • Lists M

6. Label: Composition • A variety of different molecules or elements • The same kind of atoms • The same kind of molecules

7. Composition: • A variety of different molecules or elements M • The same kind of atoms E • The same kind of molecules C

8. Composition? • Fixed proportions/ratios • Variable amounts • NA

9. Composition? • Fixed proportions/ratios C • Variable amounts M • NA E

10. Pure or not? • Pure • Not pure

11. Pure or not? • Pure E & C • Not pure M

12. How combined? • Chemically combined (bonded) • NA • Physically combined

13. How combined? • Chemically combined (bonded) C • NA E • Physically combined M

14. Properties • Components keep their identities when joined • Components lose their identities when joined • NA

15. Properties • Components don’t lose their identity when joined M • Components do lose their identity when joined C • NA E

17. How are they broken down? • Easily separated: Sorting, distillation, filtering, evaporation, centrifuge • Cannot be broken down • Difficult to break down: Requires lots of energy such as adding heat or electricity

18. How are they broken down? • Easily separated: Sorting, distillation, filtering, evaporation, centrifuge M • Cannot be broken down E • Difficult to break down: Requires lots of energy such as adding heat or electricity C

19. Examples

20. Examples compound mixture element

21. More examples

22. More examples