Looking at the Bohr models of atoms offer an explanation as to WHY the atomic size changes as it does for both periods and groups.

Periods:

Groups:

Does water roll or slide in wax paper?

What Word means the gradual change and build up of organisms in an enviroment

You discover a bottle of aqueous sodium chloride of unknown molarity. However, the bottle says that there are 0.75 moles of NaCl dissolved and the total volume of the solution is 500.0 ml. What is the molarity of this solution?

How many more valence electrons does carbon need to have a full outer valence shell?

Which particles in an atom could demonstrate that opposite charges attract? A. a neutron and an electron B. two protons together C. a proton and a neutron D. a proton and an electron

Which is an inner planet? Neptune earth Saturn Jupiter

Which item takes the most amount of water to produce

1. Which of the following two ingredients can combine to make a compound? a. Salt and water b. Hydrogen and oxygen c. Eggs and butter d. Sugar and water 2.

What are two ways climate can influence weathering?

A light has a wavelength of 4.10*10^12m. What is the Frequency?