Across
- 2. dioxide / a colourless, odourless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 per cent) and is absorbed by plants in photosynthesis.
- 3. process / (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved
- 4. / (Scientific-Based) You and your audience can easily detect the difference between a speaker and an expert. DJ is an expert in the fields of leadership, organizations, team-building, and safety.
- 7. / the rate per second of a vibration constituting a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light)
- 9. / an air-like fluid substance which expands freely to fill any space available, irrespective of its quantity.
- 11. / the ionized or ionizable constituents of a living cell, blood, or other organic matter.
- 14. / the strength and vitality required for sustained physical or mental activity
- 15. / a compound with particular chemical properties including turning litmus blue and neutralizing or effervescing with acids; typically, a caustic or corrosive substance of this kind such as lime or soda.
- 17. / a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent).
- 18. / a substance with particular chemical properties including turning litmus red, neutralizing alkalis, and dissolving some metals; typically, a corrosive or sour-tasting liquid of this kind
- 19. / physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.
Down
- 1. / a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
- 5. / the smallest particle of a chemical element that can exist.
- 6. / a substance which does not readily allow the passage of heat or sound.
- 8. reaction / neutralization: a chemical reaction in which an acid and a base interact with the formation of a salt; with strong acids and bases the essential reaction is the combination of hydrogen ions with hydroxyl ions to form water
- 10. table / relating to the periodic table of the elements.
- 12. / the smallest structural and functional unit of an organism, which is typically microscopic and consists of cytoplasm and a nucleus enclosed in a membrane.
- 13. / the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.
- 16. / a strong, hard magnetic silvery-grey metal, the chemical element of atomic number 26, much used as a material for construction and manufacturing, especially in the form of steel.