Answer:
A balanced chemical equation has the same number of atoms of each element on both sides.
Explanation:
This is because of the Law of Conservation of Mass. Therefore, valid chemical equations need to be balanced, in other words, to have the same number of atoms of each element on both sides.
The answer should be (D) endothermic reaction.
Reason : - Reactions in which energy is absorbed are called endothermic reactions. In your provided question, 150 kcal energy is being <u>absorbed</u>, and thus, we can say that it is an endothermic reaction.
Answer:
water is separated into hydrogen and oxygen gas by electrolysis is
Explanation:
both physical change and chemical change:
1) physical properties and form gets changed
2) Chemical change as the entire composition also gets changed
Answer:
Light changes speed in a glass of water.
Explanation: