FORMATIVE MODULE 10
LEARNING TARGET
4a.) Identify the reactants and products in a given chemical change and describe the presence of the same atoms in
both the reactants and products.
VOCABULARY
1.) Products: The new substances that result from a chemical change.
2.) Reactants: The substances that go into a chemical reaction.
3.) Coefficient: A large number that goes in front of a chemical formula and tells you how many molecules of
that substance there are in a chemical equation.
4.) Subscript: A small number in a chemical equation that tells you how many of a particular atom is present in
a molecule.
5.) atom: The basic unit of an element that retains the chemical and physical properties of that element
6.) molecule: A group of atoms bonded together, representing the smallest fundamental unit of a chemical
compound that can take part in a chemical reaction.
7.) Yields: Another word for equals. Refers to the products produced in a chemical reaction.
LEARNING ACTIVITIES
Chemical Formula Notation Notes and Activity (gum drops and toothpicks addition?)
Drawing and Balancing Chemical Equations Notes-Explicit Instruction
SMARTNotes Balancing Chemical Equations competition
Chemical Precipitate Demo and Nuts and Bolts Demo-Notes
ESSENTIAL QUESTIONS
S1O4c 1.) What is conserved OR THE SAME in a chemical reaction, the atoms or the molecules? Give an
example of a balanced equation AND drawing that shows this.
2.) Fill in the blanks for the identified parts of the chemical equation below. Terms include coefficient, subscript,
chemical formula.
4Fe3
+
3O2 = 2Fe3O2
3.) This chemical equation is not balanced. Balance this equation.
Fe + Cl2 = FeCl3
FORMATIVE QUIZ 10A
1. Which chemical formula best represents the model below?
a. 2Fe2O3
b. 3Fe3O2
c. 2Fe2O3
d. 3 Fe2O3
2. Which diagram below best represents the chemical equation
4Fe + 3O2 = 2Fe2O3
a.
b.
c.
d.
3. This chemical equation is not balanced. Balance this
equation and choose the best answer below.
SnO2 + H2 → Sn + H2O
a.)
3SnO2 + H2 → 3Sn + H2O
b.) SnO2 + H2 → Sn + 2 H2O
c.) SnO2 + 2H2 → Sn + 2 H2O
d. ) SnO2 + H2 → 2Sn + 2 H2O
4. The law of conservation of mass can be demonstrated by a chemical reaction.
Which of the following models of a chemical reaction best represents the law of
conservation of mass?
a.
b.
.
c.
.
d.
.
5. What best describes molecules and atoms during a chemical
change?
a. the atoms and molecules will be different
in the reactants and products
b. the atoms and molecules will be the same
in the reactants and products
c. the molecules will be the same in the
reactants and products
d. the atoms will be the same
in the reactants and products
6. This chemical equation is not balanced. Balance this equation and choose the best
answer below.
Fe + Cl2 = FeCl3
a. ) 2Fe + 3Cl2 = FeCl3
b. ) Fe + 3Cl2 = 2FeCl3
c.) 2Fe + Cl2 = 2FeCl3
d.) 2Fe + 3Cl2 = 2FeCl3
7. A group of atoms bonded together, representing the smallest fundamental unit of a
chemical compound that can take part in a chemical reaction.
a.) molecule
b.) Products
c.) atom
d.) Reactants
8. The basic unit of an element that retains the chemical and physical properties of that
element
a.) molecule:
b.) Products
c.) atom
d.) Reactants
9. The substances that go into a chemical reaction.
a.) molecule:
b.) Products
c.) atom
d.) Reactants
10.The new substances that result from a chemical change.
a.) molecule:
b.) Products
c.) atom
d.) Reactants
11.Another word for equals. Refers to the products produced in a chemical reaction.
a.) Coefficient
b.) Subscript
c.) Reactants
d.) Yields
12.A large number that goes in front of a chemical formula and tells you how many
molecules of that substance there are in a chemical equation.
a.) Coefficient
b.) Subscript
c.) Reactants
d.) Yields
13.A small number in a chemical equation that tells you how many of a particular atom is
present in a molecule.
a.) Coefficient
b.) Reactants
c.) Yields
d.) Subscript
ESSENTIAL QUESTIONS KEY
S1O4c 7.) What is conserved in a chemical reaction, the atoms or the molecules? Give an example of a
balanced equation that shows this.
-
8.) Balance the following chemical equation.
2 Na + 2H2O = 2NaOH + H2
FORMATIVE QUIZ 10A KEY
1. Which chemical formula best represents the model below?
a. 2Fe2O3
b. 3Fe3O2
c. 2Fe2O3
d. 3 Fe2O3
2. Which diagram below best represents the chemical equation
4Fe3 + 3O2 = 2Fe3O2
a.
b.
c.
d.
3. This chemical equation is not balanced. Balance this equation and choose the best answer below.
SnO2 + H2 → Sn + H2O
a.)
3SnO2 + H2 → 3Sn + H2O
b.) SnO2 + H2 → Sn + 2 H2O
c.) SnO2 + 2H2 → Sn + 2 H2O
d. ) SnO2 + H2 → 2Sn + 2 H2O
4. The law of conservation of mass can be demonstrated by a chemical reaction. Which of the following models
of a chemical reaction best represents the law of conservation of mass?
a.
b.
.
c.
.
d.
.
5. What best describes molecules and atoms during a chemical
change?
a. the atoms and molecules will be different
in the reactants and products
b. the atoms and molecules will be the same
in the reactants and products
c. the molecules will be the same in the
reactants and products
d. the atoms will be the same
in the reactants and products
6. This chemical equation is not balanced. Balance this equation and choose the best answer below.
Fe + Cl2 = FeCl3
a. ) 2Fe + 3Cl2 = FeCl3
b. ) Fe + 3Cl2 = 2FeCl3
c.) 2Fe + Cl2 = 2FeCl3
d.) 2Fe + 3Cl2 = 2FeCl3
7. A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound
that can take part in a chemical reaction.
b.) Products
a.) molecule
c.) atom
d.) Reactants
8. The basic unit of an element that retains the chemical and physical properties of that element
a.) molecule:
b.) Products
c.) atom
d.) Reactants
9. The substances that go into a chemical reaction.
a.) molecule:
b.) Products
c.) atom
d.) Reactants
10. The new substances that result from a chemical change.
a.) molecule:
b.) Products
c.) atom
d.) Reactants
11. Another word for equals. Refers to the products produced in a chemical reaction.
a.) Coefficient
b.) Subscript
c.) Reactants
d.) Yields
12. A large number that goes in front of a chemical formula and tells you how many molecules of that
substance there are in a chemical equation.
a.) Coefficient
b.) Subscript
c.) Reactants
d.) Yields
13. A small number in a chemical equation that tells you how many of a particular atom is present in a
molecule.
a.) Coefficient
b.) Reactants
c.) Yields
d.) Subscript