Across
- 4. what alcohol is used for Perfumes
- 5. how to extract metals of high reactivity
- 6. what are the differences between alkenes and alkanes
- 7. What consists of 78% of the atmosphere
- 8. what is the last element on the periodic table
Down
- 1. Plastics that soften when heated
- 2. how to measure the acidity of something
- 3. What is the most reactive metal