Enriched crossword

2. energy required to remove an electron
6. a particle found in the nucleus that has no charge
7. the addition of kinetic and potential energy
11. periodic table patterns which repeat themselves
14. element with the strongest ionization energy
15. a chemical reaction that releases energy usually in the form of heat
17. has a specific heat of 4.19 J/g·°C
19. elements that have the same number of protons, but different number of neutrons

1. energy of motion
3. the most reactive metal found on the periodic table
4. when a force is applied to an object and the object moves in the direction of the force
5. mass, the mass of one mole of a substance (2words)
8. has a molar mass of 12.01 g/mol
9. unit of work
10. the only element that can be found with no neutrons
12. a unit of measurement measuring 6.02x1023
13. the type of bond where electrons are shared
16. measures the quantity of matter in an object
18. the type of radiation that has a negative charge