Practice Chemical Symbols (5.2) - Language of Chemistry

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6 sample questions

Question 1.
What is the chemical symbol for Oxygen?
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Think of its name.
Question 2.
What does valency refer to?
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It's about how many bonds an atom can form.
3Question 3.
What is the symbol for Sodium?
- Na
- S
- So
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Think about its Latin name.
4Question 4.
True or False: Radicals can be charged groups of atoms.
- True
- False
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Recall our definition of radicals.
Question 5.
If the chemical equation is given as C + O₂ → CO₂, how do you balance it?
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Count the atoms on both sides carefully.
Question 6.
A compound consists of one Aluminium atom and three Oxygen atoms. Write its empirical formula.
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Use the criss-cross method to write the formula.

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