When making a solution by diluting a stock solution. Suppose when a solid is stirred into a liquid and dissolves,
a homogenous mixture is formed. When the mixture does not dissolve, the mixture
is heterogeneous.
Chemical properties can only be analyzed by putting the substance through a chemical reaction, such as combustion.
Physical properties can be analyzed without altering the substance chemically. With that in mind:
Boiling point: physical
Density: physical
Ductility: physical
Heat of combustion: chemical
Answer:
Thermometer - air temperature,
Barometer - air pressure,
Hygrometer - humidity,
Anemometer - wind speed,
Ceilometer - Cloud cover,
Rain/Snow gauge - precipitation
Pyranometer/ Pyrheliometer - net radiation
Explanation:
Answer: The compound in medicines should be non polar.
It is important for any drug to be able to dissolve itself through the cell membrane which consists of a lipid bi-layer, in order to diffuse in the body and circulate biologically, performing its function.
Non polar compounds are lipid soluble and therefore can dissolve in the lipid layers.
Polar compounds are water soluble and fail to cross the cell membrane.
Therefore scientists need to be sure of using compounds that are non polar in nature so they pass through the cell membrane and enter into the blood circulation of the body and perform its due function.
Explanation: