Matter and Energy Crossword

3. two or more substances that are together, but not chemically combined
5. elements located to the right of the stair-step (zig zag) line on the periodic table
9. two or more atoms joined (bonded) together chemically
14. elements located to the left of the stair-step (zig zag) line of the periodic table
16. the law that states matter cannot be created or destroyed
17. the number of protons or electrons contained in an element
22. the number of protons plus the number of neutrons contained in an atom's nucleus
23. elements or compounds on the right side of a chemical equation
26. the type of change that results in the formation off new chemical substances

1. the amount of space an object occupies
2. a substance that consists of 2 or more elements combined in a set ratio
4. positively-charged subatomic particles found in the nucleus
6. a diagram showing the amount of available energy, moving from one feeding (trophic) level to the next
7. elements or compounds on the left side of a chemical equation
8. the center of an atom that contains the protons and neutrons
10. the basic building block of matter that make up everyday objects
11. neutrally-charged subatomic particles found in the nucleus
12. the ability to move heat or electricity from one place to another
13. a table of the chemical elements arranged in order of atomic number
15. the type of change in which the form/appearance of matter is altered, but one substance is not transformed into another
18. negatively-charged subatomic particles found in a cloud surrounding the nucleus
19. a series of interactions in which one organism eats another in order to gain energy
20. a diagram showing many overlapping food chains
21. the ratio of an object's mass to its volume (M/V)
24. a pure substance that cannot be broken down chemically
25. the amount of matter in an object