Investigating "Green Powder".

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Investigating “Green Powder”

Introduction

The task in hand was to work out what the green powder really is, by running a series of experiments on it. Before the experiments began, we first had to look the container for any hazard signs, this one displayed the harmful sign, and thus meaning it should not be induced. After this, we came up with some questions, to which the answer would help us work out what the green liquid. These questions were:

Will it dissolve in water?

Does it dissolve in sulfuric acid (H4SO2)?

What happens when the powder is heated over a Bunsen flame?

With these questions in hand we set out to find the answer to each of them and thus find out what the green powder is.

 

With it dissolve in water?

Equipment

1 test tube

1 spatula

1 test tube rack

Diagram

Method

First of all we took a test tube and filled it to 1/3 with water after which we added a spatula full of the green powder, and left in a test tube rack to see if it would dissolve.

Results

Although it had looked like it had dissolved at first, after time it turns out it had not. (This effect is called suspension, when the molecules of the powder mix between the water making it seem as though it has dissolve, although time reveals that it hasn’t) therefore the powder doesn’t dissolve in water.

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Will the powder dissolve in sulfuric acid?

Equipment

1 spatula

1 test tube

1 test tube rack

1 pair of goggles

Diagram

 

Method

First of all we put on our goggles because sulfuric acid if corrosive and would be extremely harmful if it got in our eyes. Then we put a spatula of the green powder into your test tube as before. Then we put the test tube into the test tube rack after gently pouring the sulfuric acid into the test tube. After this we observed the ...

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