Across
- 4. Reaction chemistry
- 5. a component or constituent
- 6. an elementary particle having no charge
- 11. theory a coherent group of propositions
- 12. a product of mixing
- 13. an element not having the character of a metal
- 14. something used for or regarded as representing something
Down
- 1. a positively charged elementary particle
- 2. composed of two or more parts
- 3. Also called negatron.
- 7. the branch of knowledge dealing with the creation of technical means
- 8. a measure of the warmth or coldness
- 9. any of a class of elementary substances
- 10. table a table illustrating the periodic system
- 15. the substance or substances