Coding for the type of compound
4 marks · NormalTable 1 shows the names and code letters for some organic compounds.
| Name | Code letters for chain | Number of carbon atoms |
|---|---|---|
| methane | meth | |
| butane | but | |
| pentane | pent | |
| ethane | eth |
Complete the table by filling in the number of carbon atoms for each compound.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
methane: 1, butane: 4, pentane: 5, ethane: 2
Must show: 1, 4, 5, 2
Common mistakes: Swapping meth and eth; Guessing numbers above 6
Show mark scheme and worked solution
Marking points
A1 · 1 mark · Correctly gives 1 for methane
A2 · 1 mark · Correctly gives 4 for butane
A3 · 1 mark · Correctly gives 5 for pentane
A4 · 1 mark · Correctly gives 2 for ethane
Worked solution
| Name | Code letters for chain | Number of carbon atoms |
|---|---|---|
| methane | meth | 1 |
| butane | but | 4 |
| pentane | pent | 5 |
| ethane | eth | 2 |