Answer:
pure hydrogen is a pure substance even though it consists of many different types of molecules. what makes it pure substance is that it is free from contamination.
It alwasys chages becuse of magical bull in chem. ask the chem godzzz im aright
Answer:
Sodium (Na) and Chlorine (CI)
Explanation:
MgF₂ ( <span>Magnesium fluoride )
hope this helps!</span>
By there pH . a pH below 7 is acidic . Above 7 is basic. If it’s right at 7 it’s neutral.