Across
- 3. same as the atomic number
- 6. elements with properties of both metals and nonmetals
- 7. the most reactive elements
- 9. elements that do not have different oxidation states since their valence electrons are only in the outer shell
- 11. the numbers that the elements are organized by on the periodic table
- 12. horizontal rows on the periodic table
- 14. a positively charged ion
- 17. elements that can’t conduct energy
- 18. the most stable elements
- 19. atoms of the same element that have the same number of protons but a different number of neutrons
- 21. has a neural charge
- 24. the physical property of matter that causes it to experience a force when placed in an electromagnetic field
- 25. a negatively charged ion
- 26. elements that usually bond with alkali metals
- 27. the relative amount of each different isotope in a naturally occurring sample of a given element
- 28. vertical columns on the periodic table
- 29. the measure of the quantity of matter in an object
Down
- 1. a substance made up of two or more different chemical elements combined in a fixed ratio.
- 2. a compound made up of two or more chemical components that are not chemically linked
- 4. protons, neutrons, and electrons are known as _______ ________
- 5. the basic unit of a chemical element.
- 8. a chemical substance that cannot be broken down into other substances by chemical reactions
- 10. has a negative charge
- 13. the part of a cell that contains its dna
- 15. elements in which the last electron enters the f-orbital
- 16. elements that are found in the food we eat
- 20. electrons in the outermost shell of an atom
- 22. where electrons are located
- 23. a specific characteristic of a substance