Across
- 4. The number of protons in the necules of an atom
- 5. postivly charged particals located in the neclues of an atom
- 8. The average mass of the isotopes of an element
- 10. negatively charged particals located outside the neclules of an atom
- 12. levels the possible locations around a nucles where electrons nmay be found
- 14. a chemical bond formed when atoms share two pairs of electrons
- 18. A chemical bond formed when atoms share two pairs of electrons
- 19. uses dots to represent valence electrons around an elements atomic sympol
- 20. created in an atom when it has more electrons then protons.
- 21. periodic table: a table that shows the elements thier atomic number symbol and average atomic mass elements with simular chemical properities are grouped toegether
- 22. the smallest partical of a compound that retanins all the properties of the compound and is composed of one or more atoms.
Down
- 1. created in a atom when it has more protons then electrons
- 2. the central part of the atom where protons and netrons are locateed
- 3. atoms of the same element the have diffrent numbers of netrons
- 6. particlas of no charge (netrel) located in the necules of an atom
- 7. a charged atom due to the loss or gain of negitive electrons
- 9. a chemical bond formed when atoms share one pair of electrons
- 11. bond:a chemical bond formed when atoms share three pairs of electrons
- 13. bond a chemical bond resulting from the attraction between oppositly charged atoms
- 15. a pure substance made of only one kind of atom
- 16. The smallest unit.
- 17. electrons electrons on the ouutermot energy level of an atom