Across
- 3. a particle that has no charge. Also found in the nucleus
- 6. the center of the atom. Is made up of protons and neutrons. Has he most mass
- 8. is the total number of protons and neutrons in the nucleus.
- 12. A group of atoms bonded together representing the smallest unit of chemical compound.
- 13. Is a group of elements whose lightest member is represented (ex. Helium, boron, lithium, etc.)
- 17. is another name for atomic mass
- 18. Is a complete transfer of an valence electron from one atom to another.
- 19. A form of matter (liquid, solid, gas) All elements go through these changes.
- 22. is two atoms that are alike with the same number of protons but different number of neutrons.
- 24. Group contains nonmetals, 8 electrons on the outer layer. nonreactive. do not form compounds.
- 25. Basically another name for group.
- 27. Vertical lines on the periodic table grouped up with how many electrons in the valence shell
- 29. is the name of the ion that has lost an electron.
- 30. Metals are on the left side, Nonmetals are on the right side, Metalloids are on along the zig zag line.
- 31. table a table of elements
- 34. is the bond between atoms sharing electrons
- 36. this group also contains metals, but 2 electrons on the outer layer. Reactive but less than Alkali metals
- 38. a positively charged particle in an atom found in the nucleus
- 39. A mixture of metals and nonmetals. Most are under groups 6-9.
Down
- 1. a negatively charged particle found in the electron cloud
- 2. is a atoms that has gained or lost an electron.
- 4. Is a substance composed to exactly 2 different elements.
- 5. is a notation used by scientist to tell the number and types of atoms in a molecule.
- 7. The smallest unit of matter. that can be divided.
- 9. A compound made up of 2 different elements
- 10. This group contains metals, 1 electron in the outer level, and is very reactive.
- 11. is a physical phenomenon in which the chemicals attract by sharing or exchanging.
- 14. a letter or number that is printed slightly below and on the side of another character.
- 15. is the number of protons in the Atom. Determines where the element goes on the periodic table.
- 16. is any substance composed of identical molecules consisting of atoms of 2 or more chemical elements.
- 20. Made up of the electrons around the nucleus. Has the most volume
- 21. a specific pattern in the properties of chemical elements revealed on the periodic table
- 23. negatively charged particle in the outer most shell of a atom.
- 26. This group contains nonmetals. 7 electrons on the outer layer, never in uncombined form in nature.
- 28. Makes negative ions, bad conductors of heat, very brittle
- 32. Makes positive ions, good conductors of heat,when polished it shows a lustrous appearance
- 33. an arrangement of electrons in an atom
- 35. A horizontal group of elements grouped up in the number of protons in a nucleus
- 37. is the name of an ion that has gained an electron.