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Across 4. complex compound made of simple sugars 6. positively charged subatomic particle, found in the nucleus 10. two or more atoms chemically combined 12. number of protons in the nucleus of all atoms of an element 14. how tightly packed together particles are Mass divided by volume 15. a change in matter than produces new substances 17. takes on shape and size of container 18. elements that conduct and ductile and malleable 23. elements that don't conduct and are not ductire and malleable 24. complex molecule made of repeating smaller subunits 26. definite volume and definite shape 28. shows the reactants and products of a chemical reaction 30. subtances with a pH of less than 7 31. tendency of an object to resist changes in motion 32. an upward force in fluids 34. the amount of matter in an object 36. neutral subatomic particle found in the nulceas 37. total of all forces acting on an object 38. a repeating pattern of particles found in some solids 39. the amount of space an object occupies

Down 1. chemical reaction that releases heat 2. negatively charged subatomic particle, found in energy levels 3. a chemical equation with the same "stuff" on both sides 5. force of attraction between matter 7. when opposing forces acting on an object are the same 8. a push or a pull 9. distance divided by time 11. the force of gravity acting on an object's mass 13. elements with the properties of both metals and nonmetals 16. change in velocity 17. a column in the periodic table 19. smallest part of an element with the properties of that element 20. short hand way of writing what is in a compound 21. speed in a particular direction 22. a chance in matter that does not produce anything new 25. definite volume but takes on shape of container 27. number of protons plus neutrons in an element 29. chemical reaction that absorbs heat 33. substances with a pH of greater than 7 35. a row in the periodic table