atoms

1. another word for Families
3. the minimum amount of energy that can be gained or lost by an atom
4. protons and neutrons made up of smaller particles
7. Elements next to the stair-step line
12. the symbol of the element, the atomic number of the element and the mass number of the specific isotope
13. Symbol Letter or pair of letters which is an abbreviated way to write the name of an element
16. Atoms of the same element that have different numbers of neutrons
18. Those elements to the right of the stair-step line of the periodic table
19. One of the two major kinds of particles in the nucleus

1. state the lowest allowable energy state of an atom
2. Atoms consist of a positively charged center
5. The number of protons in its nucleus
6. A table of elements arranged
8. One of the two major kinds of particles in the nucleus
9. the number of waves that pass a given point per second
10. Number The sum of the number of protons and the number of neutrons in the nucleus of an atom
11. Cloud Model that the cloud surrounds the nucleus of an atom
14. good conductor of heat
15. An atom or a group of bonded atoms has a positive or negative change
17. The horizontal rows of the element in the periodic table