Balancing Equations (Write On Paper If Needed) Flashcards
(5 cards)
How do you balence an equation?
Formulae never change. To balance an equation numbers may only be put in front of a formula.
Balence this equation:
Magnesium combines with oxygen to form magnesium oxide.
Mg+O2 ~~> MgO
(Write on paper if needed)
2Mg+O2 ~~> 2MgO
Left Side Right Side
2 1 Mg 1 2
2 O 1 2
Balance this equation:
Potassium combines with chlorine to form potassium chloride.
K+Cl2 ~~> kcl
(Write on paper if needed)
2K+Cl2 ~~> 2kcl
Left Side Right Side
2 1 K 1 2
2 Cl 1 2
Balance this equation:
NHO3+Ca(OH) ~~> Ca(NO3)+H2O
(Write on paper if needed)
2NHO3+Ca(OH)2 ~~> Ca(NO3)2+2H2O
Left Side Right Side
2 1 N 2
4 3 H 2 4
8 5 O 7 8
1 Ca 1
Balance this equation:
CH4+O2 ~~> CO2+H2O
(Write on paper if needed)
CH4+3O2 ~~> CO2+2H2O
Left Side Right Side
4 H 2 4
1 C 1
6 4 2 O 4 6