In the 1800s the matter was divided into two categories
which are:
1) Organic matter
2) Inorganic matter
<span>The difference between them was that organic
referred to living matter which have life in them as opposed to inorganic
matters which are lifeless or are of geological nature such as rocks,
mountains, minerals etc.</span>
Answer: pink-purple
Explanation: Biuret solution is used to identify the presence of protein. Biuret reagent is a blue solution that, when it reacts with protein, will change color to pink-purple.
There are 4 outer atoms and lone pairs that are present in a molecule with a see-saw shape. It was called "seesaw" comes from the observation that it looks like a playground seesaw. It is very common that four bonds to a central atom result in tetrahedral or, less commonly, square planar geometry.
