Across
- 5. __________ properties describe how a substance can change; include reactivity and flammability
- 7. John ______ developed the atomic theory of matter
- 9. a complex pattern of innate behaviors
- 10. a chemical combination of two or more elements
- 12. describes a solid whose atoms do not have a regular, repeating pattern
- 15. describes a mixture that appears different throughout
- 16. ____________ properties describe characteristics of a substance or object
- 19. the base unit of all matter
- 21. a small group of elements with traits of both metals and nonmetals
- 25. a physical combination of substances, where the ingredients retain their own properties
- 28. pH of exactly 7
Down
- 1. describes a mixture that appears the same all throughout
- 2. a group of elements found in the left side of the periodic table; good conductors & shiny
- 3. pH above 7
- 4. a liquid's resistance to flow
- 6. an example of a chemical change where metal reacts with oxygen
- 8. the average kinetic energy of the molecules within a sample of matter
- 11. the ________ point describes at which temperature a liquid will become a solid; identical to melting point
- 12. the number of protons in an atom
- 13. a group of elements found in the right side of the periodic table; poor conductors and mostly gases
- 14. solved by dividing an object's mass by its volume
- 17. cutting a piece of paper is an example of a physical __________
- 18. where most of an atom's mass is found
- 20. the unit that measure force; N
- 22. pH below 7
- 23. two or more atoms of the same element with different numbers of neutrons
- 24. a pure sample of matter; includes elements & compounds
- 26. anything with mass that takes up space
- 27. the electron ________ is where electrons are found