5. Before becoming ions, the sodium atom is ( larger / smaller ) than the chlorine atom. 6. Sodium ( gains / loses ) an electron. This gives it a (positive/negative ) charge.

7. Chlorine ( gains / loses ) an electron. This gives it a ( positive / negative ) charge.

Larger

Loses, positive

gains, negative

Explanation:

5. Before becoming ions, the sodium atom is larger than the chlorine atom. This is because, generally metals have a greater atomic radius compared to non - metals.

Also, as one moves from left to right across the period, the atomic radius reduces.

Chlorine is to right on the periodic table and Sodium is to the left.

6/7;

When a neutral atom gains electrons, it becomes negatively charged. This is because the number of electrons in the atom becomes more than the number of protons.

This is the case with the sodium. As it loses electrons, it becomes positively charged.

The reverse is the case when chlorine gains electrons to become negatively charged.

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.