Across
- 5. Organized way of gathering and analyzing evidence about the natural world.
- 7. bond type of bond between atoms in which the electrons are shared.
- 8. in a molecule, uneven distribution of electrons.
- 11. the center of an atom, which contains the protons and neutrons.
- 12. particles found in the nucleus that have no charge.
- 15. logical interpretation based on what scientists already know.
Down
- 1. A scientific explanation for a set of observations.
- 2. a combination of 2 or more elements connected by bonds.
- 3. bonding weak attraction between a hydrogen atom and another atom.
- 4. using senses to collect information about your surroundings.
- 6. force of attraction between different kinds of molecules.
- 8. positively charged particle found in the nucleus of an atom.
- 9. the basic unit of matter.
- 10. electron electron found in the outermost shell of an atom; helps to determine bonding.
- 13. negatively charged particle that orbits the nucleus in the electron cloud.
- 14. a well tested explanation unifies a broad range of observations.