Atomic Structure

3. negative particle. outside nucleus. almost 0 mass
4. elements on staircase. have properties of both metals and nonmetals
6. where protons and neutrons are in the nucleus and electrons are in orbit in levels outside nucleus
8. atoms of an element that have different numbers of neutrons (same protons)
10. elements in same column. have similar properties (1-18)
13. outermost electrons
15. neutrally charged particle in the nucleus of atoms. mass of 1 amu
16. m/v. how closely packed the matter is.
17. mass total mass of atom. protons plus neutrons.

1. positively charged particle in the nucleus of atoms. mass of 1 amu.
2. organized chart of elements by increasing number of protons
5. has mass and volume. made up of atoms.
7. amount of matter an object has
9. all one type of atom
11. elements in same row (1-7)
12. the amount of space an object takes up
14. number number of protons an element's atoms have.
17. smallest particle of matter that can still retain properties of the different elements