Chemistry Crossword

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Across
  1. 2. the degree to which a specified material conducts electricity, calculated as the ratio of the current density in the material to the electric field that causes the flow of current. It is the reciprocal of the resistivity
  2. 5. In chemistry, an ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding. The compound is neutral overall, but consists of positively charged ions called cations and negatively charged ions called anions
  3. 7. the total number of protons and neutrons in a nucleus
  4. 9. the action of deposing someone, especially a monarch
  5. 11. the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table
  6. 12. The definition of endothermic is a chemical reaction that is accompanied by the absorption of heat, or an organism that generates heat to maintain its temperature. A chemical reaction that works only if heat is absorbed is an example of a reaction that would be described as endothermic
  7. 16. a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction
  8. 18. any of the elements fluorine, chlorine, bromine, iodine, and astatine, occupying group VIIA (17) of the periodic table. They are reactive nonmetallic elements that form strongly acidic compounds with hydrogen, from which simple salts can be made
  9. 21. the process of corroding metal, stone, or other materials
  10. 22. A system where the product can escape
Down
  1. 1. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
  2. 2. water that collects as droplets on a cold surface when humid air is in contact with it
  3. 3. An aqueous solution is a solution in which the solvent is water
  4. 4. a homogeneous, noncrystalline substance consisting of large molecules or ultramicroscopic particles of one substance dispersed through a second substance. Colloids include gels, sols, and emulsions; the particles do not settle and cannot be separated out by ordinary filtering or centrifuging like those in a suspension
  5. 6. Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms
  6. 7. mechanical mixture n. A heterogeneous mixture of particles or masses distinguishable as such under the microscope or separable by filtration. Examples from the Web for mechanical mixture. mechanical mixture is only the suspension of the parts of a solid in a fluid
  7. 8. 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
  8. 10. a property or characteristic of a substance that is observed during a reaction in which the chemical composition
  9. 11. very reactive, electropositive, monovalent metals forming strongly alkaline hydroxides
  10. 13. a usually irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition
  11. 14. a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction
  12. 15. the degree of compactness of a substance
  13. 17. the mass of an atom of a chemical element expressed in atomic mass units
  14. 19. the basic unit of a chemical element
  15. 20. change of state from a solid to a liquid