In chemistry, the state symbols (s), (l), (g) and (aq) are often used to represent the physical state of substances.
The table shows some changes of state. Complete the table to show the state symbol before and after each change.
| Change of State | State symbol before change | State symbol after change |
|---|---|---|
| Steam condenses on cold glass | ||
| Molten metal solidifies | ||
| Dry ice (solid carbon dioxide) sublimes |
Some solid copper(II) carbonate is added to a beaker of dilute sulfuric acid.
Complete the equation for the reaction that occurs by writing the appropriate state symbol after each formula:
CuCO3(…… )+H2SO4(…… )→CuSO4(…… )+H2O(…… )+CO2(…… ) \text{CuCO}_3(\dots\dots) + \text{H}_2\text{SO}_4(\dots\dots) \rightarrow \text{CuSO}_4(\dots\dots) + \text{H}_2\text{O}(\dots\dots) + \text{CO}_2(\dots\dots) CuCO3(……)+H2SO4(……)→CuSO4(……)+H2O(……)+CO2(……)Which state symbol is used for only two elements in the Periodic Table at room temperature?
12 exam-style questions on Edexcel IGCSE Chemistry States of matter. Each one has a worked solution and a mark scheme showing where the marks go.