1. [Water and Solubility] Why does a refridgerated fizzy drink that was in a bottle effervesce when it is poured into a glass?
- None of the above
- All of the above
- Because the air outside the bottle is at a lower pressure than the inside of the bottle; this decrease in pressure means that less carbon dioxide can be dissolved in the drink, so some bubbles out.
- Because the drink is warming up, and so less carbon dioxide can be dissolved in it; this causes some to bubble out.
1 of 25
Other questions in this quiz
2. [Water and Solubility] Which two ions present in 'hard water' cause its 'hardness'?
- Ca 2+ and Fe 2+
- Fe 2+ and Fe 3+
- Mg 2+ and K +
- Ca 2+ and Mg 2+
- Al 3+ and Ca 2+
3. [Water and Solubility] A domestic water softener usually contains ions of which element?
4. [Water and Solubility] Why is thermal pollution dangerous to aquatic fauna?
- Because the heat scares the fish.
- Because the heat reduces the amount of oxygen that can be dissolved in the water - this means the aquatic creatures can get less oxygen.
- Because the heat increases the amount of dissolved oxygen in the water - this causes the fish to get oxygen poisoning.
5. [Water and Solubility] The solubility of solid X at 50°C is 10g/100g water. At 20°C, the solubility is 2g/100g water. I cool a 50°C saturated solution of X down to 35°C; 4.3g crystallises out of solution. How much more will crystallise out of the