Density can be defined in terms of the mass of a substance present in a certain volume.
i.e. Density = Mass/ volume
It helps classify and identify matter due to the following reasons:
1) Density is an intensive property. For a given substance the density will remain the same irrespective of the amount in which it is present.
For example: The density of Aluminum (Al) = 2.7 g/cm3. This value is a constant at a certain temperature and pressure. Therefore, the density will remain the same for 1 kilogram or 1 mg of Al
2) Different elements/compounds have different values of densities which is characteristic of that substance
Answer:
A great way to reduce acid rain is to produce energy without using fossil fuels. Instead, people can use renewable energy sources, such as solar and wind power. Renewable energy sources help reduce acid rain because they produce much less pollution.
A measure of how much work we can get from each unit of energy. It's also important because we don't want to kill plants.
Hello.
Alkali metals are the most reactive group in the periodic table, not to be confused with Alkaline earth metals.
Also, Methane is a gas, not a group on the periodic table.
they contain triple bond, one sigma bond and 2 pi bonds. Pi bonds are weak and easily broken making the compound active.
<span>Chemical reaction is the process of breaking down bonds in reactants and forming new bonds in products. </span>
<span>In Alkynes breaking down bonds is easier so they are more active.
Have a nice day
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