The mercury inside the thermometer is a pure substance hope this helps :)
Hello! Rutherford’s gold foil experiment was actually really cool. While he put a beam of alpha particles into a sheet of gold foil, a few of those particles were easily deflected. He soon discovered that the reason those particles being deflected was because a little tiny nucleus. He was the one who found out the nuclear theory of an atom. I hope this was one of your answers. If not, feel free to message me and tell me your options. I’ll help you as much as I can. Have a great day! :)
Increase the wheel circumference, adjust the seat for different weight distribution and lubricate the bike chain regularly.
Arrhenius theory is a theory about acids and bases. It says that acids are those substances that produces hydrogen ions (H+) when in solution and bases are the substances that dissiociates and produces hydroxide ions (OH-). It was introduced by Svante Arrhenius.
<span>Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms
in order to gain more stability, which is gained by forming a full
electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability</span>