State symbols and phase changes
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Intros
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Examples
Lessons
- Recall the different states of matter from descriptions of chemicals.
Write "solid", "liquid", "gas", or "aqueous", next to each term below to show which state it is describing.- Powder
- Solution
- Vapour
- Crystals
- Gaseous
- Precipitate
- Write full chemical equations using information from descriptions of laboratory experiments.
Read the following experiment notes and write a balanced chemical equation, with state symbols, to describe what is happening.- Strips of magnesium were weighed out and placed in a beaker. Shortly afterwards, a solution of hydrochloric acid was added to the beaker to produce magnesium chloride (MgCl) and gaseous hydrogen.
- In a reaction vessel, chlorine gas reacts with chunks of sodium metal to form sodium chloride in a reaction releasing a lot of heat energy.
- When hot steam is passed over iron filings, gaseous hydrogen and solid iron oxide is produced.
- Aqueous hydrochloric acid and sodium carbonate (NaCO) powder react to form sodium chloride in solution, water and bubbles of carbon dioxide.