Unit 1 Vocabulary

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Across
  1. 5. An experiment that contains only one changed variable
  2. 9. Particle found in the nucleus and has no charge
  3. 10. A negatively charged particle that is in the electron cloud and orbits the nucleus
  4. 11. The variable that changes depending on the independent variable
  5. 13. A force of attraction between different types of molecules
  6. 14. Method steps to help scientists to find research
  7. 17. The amount of heat that is needed to raise the temperature of 1 gram of a substance 1 degree Celcius
  8. 20. Number of protons in the nucleus of an atom which determines the place of the chemical element on the periodic table
  9. 22. A well-tested explanation brings together a broad range of observations
  10. 24. Variables that don't change in an experiment
  11. 26. The attraction of molecules of the same subject
  12. 28. The tendency of water to rise up in a thin tube.
  13. 29. Equal to the number of protons and neutrons in the nucleus of the atom
  14. 30. The basic unit of matter
  15. 31. Is an organized way of collecting and analyzing evidence
Down
  1. 1. Type of bond between atoms in which the electrons are shared
  2. 2. Where in an experiment no changes are made and are mostly for a comparison group
  3. 3. A scientific explanation for a set of observations
  4. 4. An electron that can be found in the outermost shell of an atom that can help determine bonding
  5. 6. One or two-letter abbreviation for chemical elements
  6. 7. A connection between two or more elements that connect by a bond
  7. 8. The variable that is changed
  8. 12. Using senses to collect information on research
  9. 15. The center of an atom that contains the protons and neutrons
  10. 16. When a molecule has one - and one +, they can either attract or repel each other
  11. 18. In an experiment where the independent variable can be altered
  12. 19. A scientist with experimental results, who allows another scientist to look for flaws and test results
  13. 21. A weak attraction between a hydrogen atom and another atom
  14. 23. A Pure substance that consists entirely of one kind of atom
  15. 25. Logical analysis based on what scientists already know
  16. 27. Positive charged particle in the nucleus of an atom