Answer:
The answer to your question is: the third option
Explanation:
- those that a substance displays only through changing its composition. This option is wrong, in a physical property the matter do not change its composition.
- those that cause atoms and molecules to change. chemical properties also made that atoms and molecules change so this option is wrong.
- those that a substance displays without changing its composition. This is the correct answer, in a physical property matter do not change its composition.
- identical for all solid matter. physical properties are different for every substance, so this option is wrong.
- none of the above. it not correct, there is a correct option.
█ Question <span>█
</span><span>Four groups of students, in different parts of the world, are investigating the reason why the shape of the moon changes from time to time. If the results of their investigations are considered valid, they would most likely be ___.
</span>█ Answer █
The results would most likely be identical. This is the only way it can come out valid. The answer is letter B.
<span>Hope that helps! ★ <span>If you have further questions about this question or need more help, feel free to comment below or leave me a PM. -UnicornFudge aka Nadia </span></span>
Types of Bonds can be predicted by calculating the
difference in electronegativity.
If, Electronegativity difference is,
Less
than 0.4 then it is Non Polar Covalent Bond
Between 0.4 and 1.7 then it is Polar Covalent Bond
Greater than 1.7 then it is Ionic
For N and Se,
E.N of Nitrogen = 3.04
E.N of Selenium = 2.55
________
E.N Difference
0.49 (Weakly Polar Covalent)
As you have not provided remaining pairs, so if you have any of them, follow the method as mentioned above.
Answer:
Unit of power is watt
Explanation:
Power = rate of doing work
or
Power, P = W/t
Where
W is work done and t is time
The unit of work done is Joules and that of time is seconds.
Power, P = J/s
We know that, J/s = watts
Hence, the unit of power is watts.
Answer:
o
Explanation:
it is not a gas because the particles do not move freely it may be a liquid or a solid partly and mostly liquidized.