science biology vocab

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Across
  1. 5. the variable (which may be more than one) that shifts in reaction to the independent variable.
  2. 6. group used as a comparison in scientific experiments when no modifications are made
  3. 8. (chemistry definition) the center of an atom, which contains the protons and neutrons
  4. 9. a test when only one factor is altered.
  5. 13. a rationale supported by science for a group of observations.
  6. 14. negatively charged particle that orbits the nucleus in the electron cloud
  7. 16. _(specific heat)-- the amount of heat needed to raise the temperature of 1 gram of a substance 1 degree Celsius (°C)
  8. 18. on the basis of what scientists now know, a reasonable interpretation
  9. 20. Group where the independent variable is changed in a scientific experiment
  10. 23. a well-tested explanation unifies a broad range of observations
  11. 24. one- or two-letter abbreviation for a chemical element name
  12. 25. particle found in the nucleus that has no charge
  13. 26. 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 (also equals the number of electrons in an element)
  14. 29. a test when only one factor is altered.
  15. 30. positively charged particle found in the nucleus of an atom
  16. 31. tendency of water to rise in a thin tube
Down
  1. 1. electron- electron found in the outermost shell of an atom; helps to determine bonding
  2. 2. an expert review of experimental findings, carried out so that other researchers can check for errors, repeat experiments, and assess the reliability of the findings.
  3. 3. all other factors in a controlled experiment that are kept constant
  4. 4. a process that scientists use to approach their research
  5. 7. utilizing senses to learn about your environment
  6. 10. a combination of 2 or more elements connected by bonds
  7. 11. weak attraction between a hydrogen atom and another atom
  8. 12. equal to the total number of protons and neutrons in the nucleus of an atom (based on isotopes)
  9. 15. pure substance that consists entirely of one type of atom
  10. 17. force of attraction between different kinds of molecules
  11. 19. type of bond between atoms in which the electrons are shared
  12. 21. the basic unit of matter
  13. 22. attraction between molecules of the same substance
  14. 27. a methodical approach to acquiring and examining data about the natural world
  15. 28. in a molecule, uneven distribution of electrons (results in (+) and (-) poles) ex. water