3.3 Writing and Balancing Chemical Equations

Question 1

Chemical Equations

Answer 1

shows the identities and quantities of substances in chemical or physical change

Question 2

Steps for balancing an equation (4 steps)

Answer 2

1. Translating the statement
2. Balancing the atom
3. Adjusting the coefficients
4. Checking
5. Specifying the States of Matter

Question 3

Translating the Statement

Answer 3

substances present before the change (reactants) to the left of the yield arrow, and substances produced during the change (products) to the right of the arrow

Question 4

Balancing the Atom

Answer 4

match the numbers of each type of atom on the left and right of the yield arrow

Question 5

Adjusting the Coefficients

Answer 5

Usually the smallest whole number coefficients are preferred

Question 6

Checking

Answer 6

after balancing and adjusting, check to make sure the equation is balanced

Question 7

Specifying the States of Matter

Answer 7

final equation = add physical state of each substance and whether or not it dissolved in water

Question 8

States of Matter

Answer 8

g for Gas
l for Liquid
s for Solid
aq for Aqueous Solution (dissolved in water)