Engage: Conservation of Mass with Alka Seltzer and Water Reaction
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Last updated over 3 years ago
16 questions
Conservation of Mass Demonstration
Chemical Formulas
Watch the video of the chemical reaction between alka seltzer and water. This reaction will prove our new concept of the Law of Conservation of Mass.
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Look at the chemical formulas below and decide if they support the law of conservation of mass. This means that the amount of each atom will be the same to the left and right side of the arrow. (before and after the chemical reaction) Select YES if they are equal, select NO if they are not.
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Chemical Reaction Formula
NaHCO3 + HCl ------> NaCl + H2O + CO2
Question 1
1.
The ______ should be equal before and after the chemical reaction occurs to prove the Law of Conservation of Mass.
Count the atoms of each element to the left of the arrow in the chemical formula:
NaHCO3 + HCl
Now answer the questions about the formula.
Question 2
2.
Looking at the formula for the chemical reaction, how may Na are found to the left of the arrow (reactants).
Question 3
3.
Looking at the formula for the chemical reaction demonstrated, how many H are found to the left of the arrow (reactants).
Question 4
4.
Looking at the formula for the chemical reaction demonstrated, how many C are found to the left of the arrow (reactants).
Question 5
5.
Looking at the formula for the chemical reaction demonstrated, how many O are found to the left of the arrow (reactants).
Question 6
6.
Looking at the formula for the chemical reaction demonstrated, how many Cl are found to the left of the arrow (reactants).
Now Count the Atoms to the right of the arrow and answer the questions
------> NaCl + H2O + CO2
Question 7
7.
How many Na are found to the right of the arrow (products)
Question 8
8.
How many Cl are found to the right of the arrow (products)
Question 9
9.
How many H are found to the right of the arrow (products)
Question 10
10.
How many O are found to the right of the arrow (products)
Question 11
11.
How many C are found to the right of the arrow (products)
Question 12
12.
Question 13
13.
Question 14
14.
Question 15
15.
Question 16
16.
Since the atoms of each element match up on both sides of the equation, this means the equation is balanced.
True
False
Indicate whether the chemical equation supports the law of conservation of mass.
Yes
No
Indicate whether the chemical equation supports the law of conservation of mass.
Yes
No
Indicate whether the chemical equation supports the law of conservation of mass.
Yes
No
Indicate whether the chemical equation supports the law of conservation of mass.
