Unit 17 Spelling Rules

3. A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
5. The degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.
8. A substance with particular chemical properties including turning litmus red, neutralizing alkalis, and dissolving some metals.
9. Referring to something that is poisonous.
10. Having the properties of an alkali, or containing alkali; having a pH greater than 7.
11. A particular procedure for accomplishing or approaching something especially a systematic or established one.
13. A distinct compound or substance, especially one which has been artificially prepared or purified.
14. A scientific procedure undertaken to make a discovery test a hypothesis, or demonstrate a known fact.

1. An instrument for measuring and indicating temperature.
2. A system of ideas intended to explain something.
4. A means of solving a problem or dealing with a difficult situation.
6. The necessary items for a particular purpose.
7. A room or building equipped for scientific experiments, research, or teaching, or for the manufacture of drugs or chemicals.
11. An optical instrument used for viewing very small objects, such as mineral samples or animal or plant cells.
12. To turn from liquid into vapour.