Which of the following examples depict(s) a physical property?
2 answers:
Answer:
Explanation:
A physical property is a property that can be observed without changing the composition.
Some examples of physical properties are:
- Color
- Density
- Length
- Mass
- Smell
- Temperature
- Boiling Point
- Hardness
Now, let's examine our answer choices.
Choice A: Sugar is white in color
- The property is color, which is a physical property.
Choice B: Iron is more dense than aluminum
- The property is density, which is a physical property.
Choice C: Diamond is harder than graphite.
- The property is hardness, which is a physical property.
Since all three choices depict physical properties, the best choice is D. All of the above.
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Answer:
The IUPAC name of the compound has already been given which is 2,2-dimethyl-4-ethylheptane.
Explanation:
The IUPAC (International Union of Pure and Applied Chemistry) is an authority in chemistry that provides a guideline and standardized methods in the naming of compounds formed from the periodic table.
In order the give an IUPAC name to a compound, certain steps needs to be followed, these includes:
--> Identify the functional group in the compound as this will form the suffix. For example if the functional group is an alkane the suffix will be -ane.
--> Identify the longest carbon chain (it may not be a straight chain) that contains the functional group. This forms the prefix. Example: if the longest carbon chain is 7 carbon atoms then the prefix will be hept-
--> All the carbons of the longest chain should be numbered
--> Identify branched groups on the chain and name them according to the number of carbon atoms. They usually end with -yl.
--> Finally, combine the elements of the name is a single word.
The structural formula of the IUPAC compound can be found in the attached file for a better understanding. The branched groups are circled.
