Across
- 2. Horizontal row on the periodic table
- 4. Describes the likelihood of an element to forms bond with other elements
- 6. Solid at room temperature; Good conductors of heat and electricity
- 8. Special mass unit for the mass of a subatomic particle
- 13. Group 18 or 8a
- 16. Have properties of both metals and non-metals
- 19. Atoms form _____ by gaining or losing electrons
- 20. Electron on outermost energy ring; Outside the nucleus
- 23. Item used by J.J. Thompson in his experiment to prove that atoms contain electrons
- 24. Each element has an atomic _______ that usually consists of one or two letters
- 25. My symbol is O
- 27. Greek scientist who named the atom "atoms" for indivisible
- 28. Mixture containing two or more metallic elements
- 29. Scientist who discovered electrons
- 32. A form of matter which has mass, occupies a volume, and flows to adopt the shape of its container.
- 33. Atoms that contain the same number of protons but different number of neutrons
- 35. Subatomic particle located in the nucleus; Neutral charge.
- 37. Smallest unit of a compound that contains all the elements of a compound
- 38. My symbol is He
Down
- 1. The total distance from an atom's nucleus to the outermost electron orbital.
- 3. A measure of the attraction an atom has for electrons.
- 5. Pure substance; Cannot be broken down into another substance
- 7. My symbol is H
- 9. A form of matter which has a definite shape and volume.
- 10. Number of protons in an element
- 11. Group 1 or 1a
- 12. A form of matter that has mass but no definite shape, and can be either compressed or expanded to fill an infinite volume.
- 14. Electrons are shared; Chemical bond between two non-metals
- 15. Subatomic particle located on energy rings outside the nucleus; Negatively charged
- 17. A chemical bond between oppositely charged ions that forms when a metal atom gives away an electron and a non metal takes an electron
- 18. Chart that displays the information of all known elements according to their properties
- 21. Group 17 or 7a
- 22. Started the modern theory of atoms; approved Democritus' model of an invisible atom
- 26. Vertical column on the periodic table
- 30. Neither solid nor good conductors; Not lustrous
- 31. Smallest component of an element
- 34. Subatomic particle located in the nucleus; Positively charged
- 36. Composed of protons and neutrons; Center of the atom