Metal Oxides and hydroxides

Question 1

How is a metal oxide formed give formula

Answer 1

metal + oxygen –> metal oxide

Question 2

how is calcium oxide formed?

Answer 2

calcium is in group 2+ and oxygen is in group 2- and they cancel each other out to form CaO

Question 3

how is Lithium oxide formed?

Answer 3

Lithium has a 1+ charge and oxygen has a 2- charge.

Lithium is multiplied by 2 to have a 2+ charge.
Li2

oxygen is multiplied by 1
O

the answer is: Li2O

Question 4

How is a metal hydroxide formed give formula

Answer 4

metal oxide + water –> metal hydroxide

Question 5

how is lithium hydroxide formed

Answer 5

Li20 (oxide) + H20 —> LiOH

Question 6

how is magnesium hydroxide formed

Answer 6

MgO + H20 –> Mg(OH)2

Question 7

What is the formula for salt

Answer 7

acid + base –> salt + water