Across
- 6. from one side or end of it to the other
- 8. a scientific test done in order to discover what happens to something in particular conditions
- 9. without salt
- 10. very useful,helpful and important
Down
- 1. an amount of a number of sth
- 2. does not stop
- 3. begin to exist and develop
- 4. travelling from one place to another
- 5. connected with chemistry
- 7. go back there after you have been away