TEKS 8.5D recognize that chemical formulas are used to identify substances and determine the number of atoms of each element in chemical
Materials:
formulas containing subscripts
TEKS 8.5F recognize whether a chemical equation containing coefficients is balanced or not and how that relates to the law of conservation
of this
mass
 cards in
Matching Formulas
Objectives:
 Recognize that chemical formulas can be used to identify a
substance.
 Determine the number of atoms of each element in a chemical
formula.
file
 scissors
 zipper bags
(optional)
Teacher Directions:
In advance, make class sets of the cards attached in this file. To save
class time, laminate, cut out and place the cards in zipper bags.
Name
Dihydrogen
monoxide
(water)
Formula
Draw the structure
Is it a compound??
H2O
□
Compound
Carbon
monoxide
CO
□
Compound
Oxygen gas
O2
□
Compound
Sodium
chloride
(salt)
NaCl
□
Compound
Methane
CH4
□
Compound
Sodium
hydroxide
NaOH
□
Compound
HCl
□
Compound
Cl2
□
Compound
H2O2
□
Compound
CO2
□
Compound
Hydrochloric
acid
Chlorine gas
Hydrogen
peroxide
Carbon
dioxide
I have learned that chemical formulas are written by --- answers will vary, but look for
student explanations which include the vocabulary; subscripts, chemical symbols,
coefficients, ratios, etc.
Element Key:
Hydrogen =
TEKS 8.5D recognize that chemical formulas are used to identify substances and determine the number of atoms of
each element in chemical formulas containing subscripts
TEKS 8.5F recognize whether a chemical equation containing coefficients is balanced or not and how that relates to
the law of conservation of mass
Formulas
Directions:
 Cut out the three sets of cards.
 Match the chemical name to the formula and structure.
 Decide if the molecule is a compound.
Name
Dihydrogen
monoxide
(water)
Formula
H2O
Draw the structure
Oxygen =
Matching
Carbon
=
Sodium
=
Chlorine
=
Is it a compound?
□ Compound
Carbon monoxide
□ Compound
Oxygen gas
□ Compound
Sodium chloride
(salt)
□ Compound
Methane
□ Compound
Sodium
hydroxide
□ Compound
Hydrochloric acid
□ Compound
Chlorine gas
□ Compound
Hydrogen
peroxide
□ Compound
Carbon dioxide
□ Compound
I have learned that chemical formulas are written by __________________
_____________________________________________________________
_____________________________________________________________
Dihydrogen
monoxide
(water)
Oxygen gas
Sodium
hydroxide
Carbon
dioxide
Carbon
monoxide
Sodium
chloride
(salt)
Methane
Hydrochloric
acid
Chlorine gas
Hydrogen
peroxide
H2O2
Cl2
O2
NaOH
CH4
HCl
NaCl
CO
CO 2
H2O