<span>Physical change, heat caused this.
Water molecules that only vibrate are in solid form. If heat energy is added, the molecules will speed up their vibrations until they can break loose from the organized pattern of a solid and begin to slide over each other, changing to liquid state. If more heat energy is added, the molecules will speed up more and move randomly in all directions as a gas/vapor. Removing heat energy will reverse these changes.
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Answer:
This matters because you need to know if this site is crediable
Explanation:
You need to know this because you need to know who runs this site and if it was approved by anything crediable.
When the disk of the moon mask the the disk of the sun,it creates a (solar) eclipse.
Answer:
Sodium chloride will conduct electricity only when it is in a liquid state or in solution, this is because the ions are free to move in this state, allowing them to carry charge and conduct electricity
Explanation:
hope this helped you learned this in 5th grade
Answer:
The composition of Mg(OH)2 is
41.67 % Mg,
54.87 % O
3.457 % H
Explanation:
Thats the percent composition for each one in your question
