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QR Challenge: Mol Concept Percent Comp EMF MMF

Created using the ClassTools QR Treasure Hunt Generator

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Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

Questions / Answers (teacher reference)

Question

Answer

1. How many atoms are in 4.3mol of carbon2.58E24
2. How many grams are in 2.58E24 atoms of carbon51.6
3. What is the relationship of the empirical formula to the molecular formulaempirical formula is the smallest whole number ratio of the molecular formula
4. How many mols are equal to 358.96g of NO27.8 mols
5. Determine the empirical formula for a compound containing 2.128g Cl and 1.203 g CaCaCl2
6. A compound was analyzed and found to contain 13.5g Ca, 10.8g O and 0.675g H. What is the empirical formulaCa(OH)2
7. True or False A mol of CaCO3 contains 6.02E23 atomsFalse, it contains 6.02E23 molecules
8. Which has the greatest mass- 4.2 mol f carbon or 8.34E24 atoms of leadlead
9. What is a mole and how is the mole used in chemistryIt establishes a relationship between the atomic mass unit and the gram.
10. Find the percent composition of a compound that contains 2.30g of sodium, 1.60g of oxygen and 0.100g of hydrogen in a 4.00g sample of the compound57.5%Na, 40.0% O and 2.50% H

 


Mol Concept Percent Comp EMF MMF: QR Challenge

https://www.classtools.net/QR/decode.php?text=How-many-atoms-are-in-4.3mol-of-carbon

Question 1 (of 10)

 


Mol Concept Percent Comp EMF MMF: QR Challenge

https://www.classtools.net/QR/decode.php?text=How-many-grams-are-in-2.58E24-atoms-of-carbon

Question 2 (of 10)

 


Mol Concept Percent Comp EMF MMF: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-relationship-of-the-empirical-formula-to-the-molecular-formula

Question 3 (of 10)

 


Mol Concept Percent Comp EMF MMF: QR Challenge

https://www.classtools.net/QR/decode.php?text=How-many-mols-are-equal-to-358.96g-of-NO2

Question 4 (of 10)

 


Mol Concept Percent Comp EMF MMF: QR Challenge

https://www.classtools.net/QR/decode.php?text=Determine-the-empirical-formula-for-a-compound-containing-2.128g-Cl-and-1.203-g-Ca

Question 5 (of 10)

 


Mol Concept Percent Comp EMF MMF: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-compound-was-analyzed-and-found-to-contain-13.5g-Ca,-10.8g-O-and-0.675g-H.--What-is-the-empirical-formula

Question 6 (of 10)

 


Mol Concept Percent Comp EMF MMF: QR Challenge

https://www.classtools.net/QR/decode.php?text=True-or-False-A-mol-of-CaCO3-contains-6.02E23-atoms

Question 7 (of 10)

 


Mol Concept Percent Comp EMF MMF: QR Challenge

https://www.classtools.net/QR/decode.php?text=Which-has-the-greatest-mass--4.2-mol-f-carbon-or-8.34E24-atoms-of-lead

Question 8 (of 10)

 


Mol Concept Percent Comp EMF MMF: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-a-mole-and-how-is-the-mole-used-in-chemistry

Question 9 (of 10)

 


Mol Concept Percent Comp EMF MMF: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find-the-percent-composition-of-a-compound-that-contains-2.30g-of-sodium,-1.60g-of-oxygen-and-0.100g-of-hydrogen-in-a-4.00g-sample-of-the-compound

Question 10 (of 10)