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Across 1. the attractive force between objects; the force that moves objects downhill 3. anything that has mass and takes up space 5. also known as a consumer 7. a substance that cannot be broken down into any other substances by chemical or physical means 9. a small particle found in the nucleus of the atom, with no electrical charge 11. a set of beliefs that may make use of science, but whose conclusions and predictions are not based on observation, objective reasoning, or scientific evidence 13. a possible explanation for a set of observations or answer to a scientific question 14. a state of matter that has no definite shape, but has a definite volume 15. a single kind of matter that has a specific makeup, or composition (2 Words) 16. the process by which molecules at the surface of a liquid absorb enough energy to change to a gas 17. a state of matter that has a definite shape and a definite volume 19. a measure of how much solute can dissolve in a given solvent at a given temperature 20. an element that lacks most of the properties of a metal 22. the one factor that a scientist changes during an experiment (2 Words)

Down 2. an organism that is able to capture energy from sunlight or chemicals and use it to produce its own food 3. a group of two or more atoms held together by covalent bonds 4. the number of protons in the nucleus of an atom (2 Words) 6. the basic particle from which all elements are made; the smallest particle of an element that has the properties of that element 8. the factor that changes as a result of changes to the independent variable in an experiment (2 Words) 10. small, positively charged particles that are found in the nucleus of an atom 12. a one or two letter representation of an element (2 Words) 18. the amount of space that matter occupies 21. a state of matter with no definite shape or volume