If there is any unused Chemicals left in the container it should be properly disposed and chemicals taken out of the original container should not be poured back into the container because it can be <span>contaminated</span>
An element is defined as a substance made up of atoms with a specific number of protons.
Answer: -
The concentration of solution which contains 2.5 g of sugar dissolved in 50 g of water is 5 % (w/w)
Explanation: -
Amount of sugar = 2.5 g
Mass of water = 50 g
Concentration of sugar = 
x 100
= 5%
Thus the concentration of sugar is 5 % (w/w)
Out of the following given choices:
A. Solvent
B. Polarity
C. Suspension
D. Solute
The answer is D. While the powder is the solute, the water is the solvent. Solutes dissolve in solvents while solution is the homogenous mixture of solvent and solute.
