Gizmo_1_Student_Exploration_Balancing_Chemical_Equations -...

Name: William Dunphy____________________ Date: ________________________
Student Exploration: Balancing Chemical Equations
Vocabulary: coefficient, combustion, compound, decomposition, double replacement, element,
molecule, product, reactant, single replacement, subscript, synthesis
Prior Knowledge Questions (Do these BEFORE using the Gizmo
.)
The scouts are making
s’mores out of toasted marshmallows, chocolate, and graham crackers.
2. Assuming a s’more requires two graham crackers, one marshmallow, and one piece of
chocolate, how many s’mores could you make with the ingredients shown?
Gizmo Warm-up
In a chemical reaction, reactants interact to form
products . This process is summarized by a
chemical equation. In the Balancing Chemical
Equations Gizmo, look at the floating molecules
below the initial reaction:
H
2
+ O
2
→ H
2
1. How many atoms are in a hydrogen
molecule (H
2
O.
2. How many atoms are in an oxygen
molecule (O
2
3. How many hydrogen and oxygen atoms are in a water molecule (H
2