Across
- 5. a branch of science concerned with heat and temperature and their relation to energy and work.
- 6. branch of science concerned with the nature and properties of matter and energy.
- 8. the application of scientific knowledge for practical purpose, especially in industry.
- 9. the study of matter, and all matter is made up of atoms.
- 10. biological community of interacting organisms and their physical environment.
- 12. a system of acquiring knowledge.
- 13. smallest particle of chemical element that retains its chemical properties.
Down
- 1. anything that occupies space and has mass.
- 2. process used by plants and other organisms to convert light energy into chemical energy can be later released to fuel the organisms activities (energy transformation)
- 3. table chart of the chemical elements that displays them in rows horizontally in order of increasing atomic number and vertically according to similarity of the chemical properties of their atoms.
- 4. the science of life and of living organisms, including their structure, function, growth, origin, evolution, and distribution.
- 7. the basic structural, functional, and biological unit of all known living organisms.
- 11. negative charge if an atom.
- 12. system the collection of eight planets and their moons in orbit around the sun, tother with similar bodies in the form of asteroids, meteoroids, and comets.
