Balancing equations

Question 1

what are the state symbols in equations

Answer 1

they tell you what physical state the reactants and products are in

Question 2

Show the equation for magnesium and oxygen to produce magnesium oxide

Answer 2

2Mg + O2 —–2MGO

Question 3

name all the state symbols

Answer 3

(s)= solid
(l)= liquid
(g)= gas
(aq)= Aqueous- dissolved in water

Question 4

What must there always be the same number of

Answer 4

atoms of each element on both sides of the equation

Question 5

How many atoms are in this equation of the elements
H2SO4

Answer 5

2hydrogens
1sulfar
4oxygen

Question 6

How many atoms are in this equation of the elements
Ba3(PO4)2

Answer 6

3barium
2phosphorus
8oxygen

Question 7

Numbers in an equation always refer to the element

Answer 7

infront

Question 8

How many of each element?
CO2

Answer 8

C-1
O-2

Question 9

How many of each element?
H2SO4

Answer 9

H-2
S-1
O-4

Question 10

How many of each element?
KMnO4

Answer 10

K-1
Mn-1
O-4

Question 11

How many of each element?BaCl2

Answer 11

Ba-1
Cl-2

Question 12

How many of each element?
NiSO4

Answer 12

Ni-1
S-1
O-4