Identifying unknown substances (including barium)

12 questions

1. What are the basic units of matter?
2. What are elements made of?
3. What forms when two or more elements chemically combine?
4. What occurs during a chemical reaction?
5. What is the purpose of the periodic table?
6. What information does the atomic number of an element provide?
7. What colour flame does sodium produce in a flame test?
8. What does a white precipitate indicate in a precipitation reaction?
9. Flow charts help in chemical analysis by ...
10. What is an important practice when recording observations?
11. What is the purpose of accurate observation in chemical analysis?
12. What should be recorded during a flame test?

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