The rows in the top third - This group consists of elements like Sodium, Magnesium, Potassium and Calcium on the right and Chlorine, Carbon, Nitrogen and Oxygen on the left.
Sodium and Chlorine are components of salt, a very important compound of our blood, essential for transferring electrical signals from the brain to the rest of the body and vice versa. Calcium is the building block of our bones, while Magnesium and potassium ensure proper functioning of our organs.
Answer:
you dony have a picture for me to match them
Explanation:
Volume is the amount of space the matter takes up, density is mass OF the volume
Density<span> is </span>defined<span> as the ratio between mass and volume or mass per unit volume.
Source is google
</span>
