🧪 Topic Summary
Naming covalent compounds is all about understanding prefixes! Since these compounds share electrons instead of transferring them like ionic compounds, we use prefixes to indicate the number of each atom present. Remember, the first element keeps its name, while the second element gets the suffix '-ide'. Don't forget to drop the 'a' or 'o' from the prefix if it's followed by 'oxide'.
For example, $N_2O_5$ is named dinitrogen pentoxide. Simple, right? Let's put your knowledge to the test with these practice questions!
🧠 Part A: Vocabulary
Match the term to its definition:
| Term |
Definition |
| 1. Prefix |
A. Indicates sharing of electrons. |
| 2. Covalent Bond |
B. The suffix added to the second element in a covalent compound name. |
| 3. -ide |
C. Used to specify the number of atoms of an element in a covalent compound. |
| 4. Mono- |
D. A bond formed when atoms share electrons. |
| 5. Nonmetal |
E. Indicates one atom, but is usually omitted for the first element. |
(Answers: 1-C, 2-D, 3-B, 4-E, 5-A)
✍️ Part B: Fill in the Blanks
Covalent compounds are formed between two or more __________. To name them, use __________ to indicate the number of atoms of each element. The first element in the formula is named __________, while the second element gets the suffix __________.
(Answers: nonmetals, prefixes, normally, -ide)
🤔 Part C: Critical Thinking
Why is it important to use prefixes when naming covalent compounds, but not always necessary when naming ionic compounds? Explain your reasoning.