3. When sodium metal is placed in a flask full of chlorine gas, a violent reaction occurs. These
dangerous non-charged elements, when mixed,
produce the ionic compound sodium chloride,
otherwise known as table salt. Explain how this
happens in terms of nuclei, electrons, and charges.

What are the dimensions of the cross section that passes through the points a, f, g, and d?

1. explain how you calculate the net force in any direction on the box. 2. suppose an upward force of 15n is added to the box. what will be the net vertical force on the box? 3. what force could be applied to the box to make the net force in the horizontal direction zero? explain. 4. suppose a force of 25n to the right is added to the box. what will be the net force to the right?

Which statements did both aristotle and ptolemy assume? check all that apply.