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Objective:
To correctly balance as many equations as possible in a 25 minute
period.
Balanced equations are submitted in a relay-style fashion.
1.
This
competitive event amounts to a good old fashioned equation balancing
relay
race! Team members will be seated at a team table located at one
end of the room. The judges will be seated at the opposite
end.
After the team (or a team member) has balanced an equation and wishes
to
submit it for scoring, one member of the team then relays (runs) the
result
to the judges for scoring. If the equation is correctly balanced,
the team will be awarded points equal to the value shown on the
equation
card. If the answer is wrong, a five point penalty is
assessed.
Right or wrong, the equation is not returned to the group.
Running
scores will be posted for all teams.
2.
Scoring: The team with the dayÕs highest score for this event will be
awarded
100 points. All other teams will receive points equal to the
percent
of the high score represented by their score. For example, if the
high score for the day was 524 and your team scored 433, the high score
team would receive 100 points for the event and your team would receive
433 / 524 _ 100% = 83 points. Point values awarded will be
rounded
to the nearest whole number.
3. Special Rules and Considerations:
a. Only one student from each team may be out of his/her seat at a time.
b. Students may relay only one balanced equation per trip to the judging table.
c. Students may not interfere with other teams or team members.
d. Students may not leave the room.
e. Judges may assess five point penalties for conduct infractions.
f. Equations must be balanced with the smallest whole number coefficients.
For example, the following equation:
N2
+
H2 
NH3
is correctly balanced as:
N2 +
3 H2 
2 NH3
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