### Class Activity
#### 1. State whether the following compounds are oxides or not:
a) [tex]\( \text{Na}_2\text{O} \)[/tex]
- Answer: Oxide
b) [tex]\( \text{KOH} \)[/tex]
- Answer: Not Oxide
c) [tex]\( \text{Ga}_2\text{O}_3 \)[/tex]
- Answer: Oxide
d) [tex]\( \text{P}_4\text{O}_6 \)[/tex]
- Answer: Oxide
e) [tex]\( \text{N}_2\text{O}_4 \)[/tex]
- Answer: Oxide
f) [tex]\( \text{H}_2\text{O} \)[/tex]
- Answer: Oxide
g) [tex]\( \text{Na}_2\text{CO}_3 \)[/tex]
- Answer: Not Oxide
h) [tex]\( \text{KNO}_3 \)[/tex]
- Answer: Not Oxide
i) [tex]\( \text{H}_2\text{SO}_4 \)[/tex]
- Answer: Not Oxide
#### 2. Write chemical equations to show the amphoteric nature of zinc oxide (ZnO):
- ZnO acting as a base (reacting with acids):
[tex]\[
\text{ZnO} + 2\text{HCl} \rightarrow \text{ZnCl}_2 + \text{H}_2\text{O}
\][/tex]
- ZnO acting as an acid (reacting with bases):
[tex]\[
\text{ZnO} + 2\text{NaOH} + \text{H}_2\text{O} \rightarrow \text{Na}_2[\text{Zn(OH)}_4]
\][/tex]
#### 3. Classify the following oxides as acidic, basic, amphoteric, or neutral:
- [tex]\( \text{Na}_2\text{O} \)[/tex]
- Classification: Basic
- [tex]\( \text{KOH} \)[/tex]
- Classification: Basic
- [tex]\( \text{Ga}_2\text{O}_3 \)[/tex]
- Classification: Amphoteric
- [tex]\( \text{P}_4\text{O}_6 \)[/tex]
- Classification: Acidic
- [tex]\( \text{N}_2\text{O}_4 \)[/tex]
- Classification: Acidic
- [tex]\( \text{H}_2\text{O} \)[/tex]
- Classification: Neutral
- [tex]\( \text{Na}_2\text{CO}_3 \)[/tex]
- Classification: Basic
- [tex]\( \text{KNO}_3 \)[/tex]
- Classification: Neutral
- [tex]\( \text{H}_2\text{SO}_4 \)[/tex]
- Classification: Acidic
