| 1. | Any suitable diagram/ neutrons & protons in nucleus, electrons in shells surrounding nucleus |
| 2. | |
 |
|
| a) | As atomic number increases, melting point decreases |
| b) | They each have a single outer electron. |
| c) | Alkali metals |
| 4. | |
| C2H5NO2 |
National 5 Chemistry Homework Answers
Hyndland Science Faculty
| 1. | Any suitable diagram/ neutrons & protons in nucleus, electrons in shells surrounding nucleus |
| 2. | |
|
|
| a) | As atomic number increases, melting point decreases |
| b) | They each have a single outer electron. |
| c) | Alkali metals |
| 4. | |
| C2H5NO2 |