The first definition of an element was made by
...The first definition of an element was made by
J. Dalton.
A. Lavoisier.
R. Boyle.
J. J. Thompson.
Correct answer is C
The word element was first given by Rebert Boyle. It is defined as the simplest chemical substance that cannot be broken down during a chemical reaction
Examples of polymers include the following except ...
When the two end alkyl groups ethyl ethanoate are interchange, the compound formed is known as ...
50cm 3 of a saturated solution of potassium trioxonitrate (V)at 40°C contains 5.05g of the salt....
Which of the following compounds dissolves in water to give an alkaline solution? ...