Silicon's element name is Silicon. Silicon's symbol is "Si" Silicon is a metalloid. Silicon would belong in the Semi-Conductor's family. 14 Protons, 14 Neutrons and 14 Electrons (if the silicon element is neutral and the most common of it's atom.)
<span>A. light and radio waves
Light is also known as electromagnetic waves. This is because light is actually both an electric and magnetic field. Though it does not seem like it, light does not contain a charge but rather an </span>oscillating field. You can see this happening in your TV. There is no isolated magnetic charge for electromagnetic waves, so you won't be able to do something like put a magnet on the waves.
When Amanda poured some of the liquid in a test tube, she noticed that the edges of the water curved upward, which is an example of adhesion.
When Pol filled another test tube to the top, the liquid formed a low dome, which is evidence of cohesion.
When Amanda added table salt to the first test tube and shook it, she noted that the liquid had dissolved the solute.
All of these observations indicated the presence of covalent bonds.
Pol determined that the pH of the sample is 7, which shows the sample is neutral.
Based on all of the evidence Amanda and Pol gathered, the unknown liquid is water.
