Match each number to correct letter.
1. protons plus neutron a] atomic mass
2. proton number b] photographic film
3. detects radiation c] atom
4. fixed shape d] electron
5. neutral charge e] atomic number
6. positive charge f] gas
7. occupies the whole container g] solid
8. measures intensity of radiation h] neutron
9. smallest particle to retain characteristics i] proton
10. negative charge j] geiger counter

So I will match them but by words so if necessary you will have to do the number letter pairing.. kool:

protons plus neutron = atomic mass
proton number = atomic number
detects radiation = Geiger Counter
fixed shape = solid
neutral charge = neutron
positive charge = proton
occupies the whole container = gas
measures the intensity of radiation = photographic film
smallest particle to retain characteristics = atom
negative charge = electron

Hope this helps and doesn't leave you with too much work

Ribonuclease activity is a type of nuclease that catalyzes the degradation of rna into small components.