Answer: Ice is less dense than water.
Explanation: As water freezes, it expands, making it less dense. This is why ice cubes float in a glass of water.
Removing salt from water will reduce it's density
Negative symbol which means that gain of electron.
I not sure about the answer sorry!! if you will get wrong in your book
Answer: Option (b) is the correct answer.
Explanation:
Since energy of reactants is less than the energy of products. Therefore, it means energy is absorbed during the reaction.
As the energy required to break the bonds in the reactants is greater than the energy released when products are formed.
Therefore, it is an endothermic reaction.
Thus, we can conclude that the statement, it is endothermic because the energy required to break bonds in the reactants is greater than the energy released when the products are formed is correct.
Pretty sure the force of gravity increases as the object does.