AP Chemistry Terms

2. Atoms that contain the same number of protons with a different number of neutrons
7. A form of energy; always flows from high temperatures to low temperatures
8. Molecules that have the same molecular formula but different structures and thus different properties
9. The threshold energy that must be overcome in order to produce products in a chemical reaction
10. Property of a system relating to its heat flow
12. The energy change associated with the addition of an electron to a gaseous atom or ion
14. Energy associated with motion
15. principle As electrons fill orbitals, they must fill the lowest energy orbital available first
16. The energy required to break a given chemical bond
17. Measures the amount of randomness, disorder, or chaos in a system

1. The amount of energy required to remove an electron from a gaseous atom or ion
3. The ability of an atom to attract electrons to itself in a shared bond
4. Energy associated with position or stored energy
5. The energy released when gaseous ions form a crystal lattice
6. Common name for H2O
11. Electrons must separately fill equal energy orbitals (i.e. 3 separate p orbitals) before pairing in a single orbital
13. Related to amount of work a system may produce