Is mass conserved when 200g of water undergoes a physical change? Use complete sentences to support your answer by explaining how this can be demonstrated

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle