Chemistry Topic 1

4. How do electrons fill orbitals before pairing up?
6. Something that can be used to work out the relative atomic masses of different atoms
7. The sum of the protons and neutrons inside the nucleus of an atom is..
9. When the number of electrons between the outer shell and nucleus increases, and the outer electrons feel less attraction, is called...
10. Different atoms of the same element that have different numbers of neutrons but the same number of protons are called an..
16. The mass of an atom of an isotope relative to 1/12 the mass of a Carbon 12 atom is..
19. The average mass of an elements isotopes relative to 1/12 the mass of a Carbon 12 atom is..
21. The number of protons inside the nucleus is..

1. The energy needed to remove 1 electron from 1 mole of gaseous atoms is..
2. Electrons fill up subshells with this amount of energy first
3. What happens to the first ionisation energy down a group?
5. Atomic radii down a group..
8. Shows the frequency of light emitted by electrons when they drop back to a lower energy level.
11. What is the relative isotopic mass also known as in mass spectroscopy?
12. Atomic radii across a period..
13. The energy needed to remove 1 electron from 1 mole of gaseous 1+ ions is..
14. What happens to the first ionisation energy across a period?
15. The size of an atom is called the..
17. What is the peak with the highest m/z value called?
18. This happens in ionisation energy happen when a new shell is broken into
20. What ion is larger than its atom?
22. When electrons take in energy from the surroundings and move up to a higher energy level, they are?