Question

Match these items.

1. negative charged subatomic particle
electron cloud
2. basic unit of matter
molecule
3. electron path
electron
4. came up with one of the first atomic theories
covalent
5. three-dimensional orbits
Niels Bohr
6. two or more atoms bonded
John Dalton
7. bond formed from sharing electrons
anion
8. developed atomic theory that includes electron shells
shell
9. negatively charged ion
atom

Answer 1

Here is the correct matching of the items:

1. **negative charged subatomic particle** → **electron**
2. **basic unit of matter** → **atom**
3. **electron path** → **shell**
4. **came up with one of the first atomic theories** → **John Dalton**
5. **three-dimensional orbits** → **Niels Bohr**
6. **two or more atoms bonded** → **molecule**
7. **bond formed from sharing electrons** → **covalent**
8. **developed atomic theory that includes electron shells** → **Niels Bohr**
9. **negatively charged ion** → **anion**

Note: For item 5, both "three-dimensional orbits" and "electron path" refer to concepts attributed to Niels Bohr, so they may overlap in context.