Across
- 2. made by adding reactants together
- 3. smallest group of atoms possible for a chemical reaction
- 6. number of protons in a nucleus
- 7. mass can't be created or destroyed
- 8. mass of one atom of an element
- 11. becomes cold/absorbs heat
- 13. horizontal row (1-7)
- 14. makes up everything
- 15. space around nucleus where electrons would be found
- 17. outermost shell
- 19. a chemical part of a mixture or compound
- 20. positive charge
- 22. vertical column
- 23. made of several elements, causes a chemical change (new substance)
- 25. simplest substance possible
Down
- 1. six of these on the periodic table of elements
- 4. neutral charge
- 5. created periodic table of elements
- 9. 1-3 letter symbol, first letter capitalized
- 10. brittle, non-malleable or ductile, poor conductor
- 12. produces/gives off heat
- 16. shares characteristics of metal and non-metal
- 18. negative charge
- 21. center/brain where protons and neutrons are located
- 24. conductor of heat and electricity, ductile, malleable