Definition: These are the elements or compounds that enter into a chemical reaction. Example: In the equation: AgNO3 + NaCl -> AgCl + NaNO3,
it is: AgNO3 + NaCl

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

Heat is the total potential energy of a substance that can be transferred. true false

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?