Answer:
Element
magnesium, hydrogen, chlorine, sulfur
Compound
water, iron oxide
Mixture
air, salty water , dias cola.
Explanation:
Element is made up of only one type of atom and are relresented by symbols.
Compound are formed by chemical mixing of atoms of elements and have a chemical formula
Mixture are formed by simple mixing up of substances and mixture don't have chemical formula.
Answer: Because it is a giant fire ball
Baking soda. to put in the most simple terms..
-OH is the "base" anion
H+ is the "acid" ion
should be ocean ridges im not sure hope this helps tho