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Learning Worksheet About Flame Reaction

This is a worksheet about flame reaction.
Let's look back at learning.How many questions can you answer?

1st question:
Why will fireworks be the various colors? What the phenomenon is called?

2nd question:
What the plus or minus electrically charged atoms is called?

3rd question:
The similar atoms is perpendicularly located in a line in the table. What the table is called?

4th question:
Prism makes a rainbow from sunlight.
Light is distinguishes by what?

5th question:
Electron is excited and then return to the original.
At that time what is released?

6th question:
What is the most important thing to do before the experiment?

The last question:
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