Identify the period or group number described for the following case: a) contains elements c, n and o b) start with helium c) contains the alkali metals d) end with neon

How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.

How does science use models to gain a better understanding of concepts?

The dashed segment of the plotted experiment in the graph in the l