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- 3. table a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns.
- 6. a substance made by mixing other substances together
- 8. a thing that represents or stands for something else, especially a material object representing something abstract
- 10. a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
- 11. arrangement The distinction between states (that is solids, liquids and gases) is based on
- 13. a thing that is composed of two or more separate elements; a mixture
- 14. 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.
- 15. the application of scientific knowledge for practical purposes, especially in industry
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- 1. a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron.
- 2. 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
- 4. Reaction a process that involves rearrangement of the molecular or ionic structure of a thing that is composed of two or more separate elements; a mixturea substance, as distinct from a change in physical form or a nuclear reaction.
- 5. any of the four substances (earth, water, air, and fire) regarded as the fundamental constituents of the world in ancient and medieval philosophy
- 7. an element or substance that is not a metal.
- 9. a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
- 12. theory A scientific theory is an explanation of some aspect of the natural world that can, in accordance with the scientific method, be repeatedly tested, using a predefined protocol of observations and experiments
