Thermal Decomposition of Metal Carbonates Quiz
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5 questions, one answer each
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1. What are the products of thermally decomposing a metal carbonate?
- A. Metal chloride and water
- B. Metal oxide and carbon dioxide
- C. Metal hydroxide and oxygen
- D. Metal and carbon
2. Which gas turns limewater cloudy?
- A. Oxygen
- B. Hydrogen
- C. Carbon dioxide
- D. Nitrogen
3. What colour is copper oxide, formed from heating copper carbonate?
- A. Green
- B. Blue
- C. Black
- D. White
4. Which statement about Group 1 carbonates is correct?
- A. All Group 1 carbonates decompose easily with a Bunsen burner
- B. Most Group 1 carbonates (except lithium) do not decompose at Bunsen burner temperatures
- C. Group 1 carbonates never decompose at any temperature
- D. Group 1 carbonates decompose to form hydrogen gas
5. A student heats an unknown white carbonate strongly with a Bunsen burner and observes no change, even after several minutes. What does this suggest about the metal?
- A. It is likely calcium
- B. It is likely copper
- C. It is likely a Group 1 metal other than lithium
- D. It is likely magnesium