B) they form new substances with new properties.
<span>They use a pH meter. The scale is called pH scale, any value below 7 is acidic</span>
Answer:
C. the evolution of building techniques
Hope this helps.
Agitation, or stirring of the solute in the solvent increases the solubility of the solution
Answer:i nitrogen, oxygen, hydrogen
Explanation: " Molecules of most elements are made up of only one of atom of that element" well if you search it up