Not just a bag of bones!
Delve into the most intriguing world of me!
Who am I?
Important muscles and skeletal structures cannot function without me. I don't get along well with water or air; I'm sadly not very high in demand, costing $20 per 10g.
I can be used to refine elements, and I can be alloyed with others. I am used to eliminate gases from vacuums. One of my isotopes is used to make stomach antacids, chalk, white paint, and limestone.
Who am I?
A few facts
In case you didn't already know, my symbol is Ca, atomic number is twenty, and my atomic mass is forty. Inside me my protons, neutrons, and electrons are all the same at, again, twenty. I am a rather soft metal, with a melting point of 842*C and a boiling point of 1484*C. Typically, I am content staying at a solid.
Here are a few things to know about me. My density is 1.54g/mL. My appearance is soft and silvery gray. I am essential in human nutrition. You basically have two pounds of me inside of you. When you burn me, I produce a brilliant brick red flame. I'm used to purify water, though we usually don't agree and have a terrible reaction. To protect myself, I develop an oxide coating when exposed to cruel air. Even the cells in your body need me, they use me to communicate!