Compounds

1. Compounds What are compounds?

2. Quickstart • Which element has an Atomic Number of 80? • Name 2 elements who’s symbols come from their Latin names • Which of the following is the correct symbol for Molybdenumi) M ii) MO iii) mo iv) Mo

3. X Y Z Q How can we tell which of the above molecules are elements and which are compounds? “A compound is a substance made up of more than one type of atom bonded together”

4. Questions Identify whether the following are elements or compounds e.g. H2O = compound 1) He 2) O2 3) C 4) CH4 5) Li3 6) Uun 7) Iron 8) Wood 9) Hydrogen 10) Air

5. Experiment • Add a piece of Magnesium to the crucible • Heat with the lid firmly on for around 3 minutes • Turn heat off and using tongs remove the lid and observe

6. Write up • Make a labelled diagram of your experiment (bunsen burner, tripod, crucible and magnesium) • Write a sentence describing what the magnesium looked like at the start of the experiment and at the end When heated, Magnesium reacts with the Oxygen in the air to form Magnesium Oxide

7. A compound gets its name from the elements joined together to make it. Compounds that contain only 2 elements always end in IDE Copper react with Chlorine to make CopperChloride

8. Recap A compound is a substance which has 1 / more than 1 type of atom joined/mixed together. Compounds are easy/ hard to separate and are similar/different to the elements that make them