Write the skeletal equation, with formulae, for each word equation…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Write the skeletal equation, with formulae, for each word equation. Then balance it.
- hydrogen + chlorine hydrogen chloride
- calcium + water calcium hydroxide + hydrogen
- carbon + oxygen carbon dioxide
Need a reminder? The key ideaShow
A chemical equation shows the reactants on the left and the products on the right. State symbols: solid, liquid, gas, dissolved in water. Gases such as oxygen, hydrogen and chlorine are written as , , . A number after a bracket multiplies everything inside it.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. (a) , balanced as .
Step 2. (b) , balanced as .
Step 3. (c) , already balanced.
Answer: as above.
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