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Share & Win


In 2019, one mole was officially defined as containing exactly 6.02214076 x 1023 elementary entities. However, despite this relatively short definition, many students struggle with the concept of the mole and how it relates to amount, mass, and concentration.

Share a video with us of your favorite explanation, analogy, or demonstration showing how you teach students how big a mole is for a chance to receive up to $500 in Visa Gift Cards! After all videos are uploaded, teachers will VOTE on their favorite videos to select the winners. See the full rules here and enter today!

Contest period: The contest runs October 4, 2021 to October 23, 2021. Any entries submitted after October 23 are not valid.  

Prizes will be given to the educators with the most-liked videos as detailed in the official rules at 

  • 1st place winner – (2) $250 Visa Gift Cards totaling $500
  • 2nd place winner – (1) $250 Visa Gift Card
  • 3rd place winner – (1) $100 Visa Gift Card

How to Enter:  Record • Upload • Vote


The submission process is simple, but limited to customers ages 21 and above. Create a short original video sharing the way you teach students how to conceptualize the size of a mole. Videos can feature teachers talking to a camera, non-copyrighted content slides, whiteboard sketches, etc. – use your imagination! Videos cannot feature individuals under the age of 21 and the content should be the video creator’s own idea.  

Next, upload your video to YouTube, Vimeo, or TikTok with the hashtag #FlinnMoleDay and share the link and your entry information on  

Finally, be sure to VOTE for your video and share the page! You may vote once per day.

Content requirements:

  • Video must contain:
    • Reference to 6.02214076×1023, the SI unit known as a Mole.
    • Your concept, method, or reasoning behind how you teach students the size of a mole.
  • Concepts must be original to the entrant and should not be found in any copy-righted material including, but not limited to, text books, digital or written curriculum, science websites, posters, or activities. If material is found to have been copy-righted by anyone outside of the original owner, the video will be removed and the submission will be ineligible for voting.
  • File format: Link to YouTube, Vimeo, or TikTok video
  • Examples of content:
  • How long would it take the entire population of the Earth (assume 6 billion) to collectively count an Avogadro’s number of objects if they could count at the rate of one object per second?
    • (6 × 109 people) × (1 object/persons) × (3 × 107s/yr) = 18 × 1016 objects/year
    • (6.02 × 1023 objects)/(18 × 1016 objects/year) = 3.3 × 106 years or 3,300,000 years

Winners will be chosen:

  • As a result of popular vote (# of Likes) on the website.
  • Relevancy to the scientific topic of the size of a Mole.

Terms and conditions:

  • The campaign is open to Flinn Scientific customers ages 21 years and above, excluding Flinn Scientific employees. 
  • There is no entry fee and no purchase necessary to enter this competition.
  • By entering this competition, an entrant is indicating his/her agreement to be bound by these terms and conditions.
  • Only one entry will be accepted per person. Multiple entries from the same person will be disqualified.
  • Closing date for entry will be October 23, 2021. After this date, no further entries to the competition will be permitted.
  • Winners will be chosen as a result of a popular vote on Videos must be relevant to the topic as determined by the staff at Flinn Scientific.
  • Flinn Scientific reserves the right to disqualify entries if content does not follow the guidelines, contains persons under 21 years of age, or contains copyrighted information.
  • By submitting their video, entrants agree to allow Flinn Scientific to use the videos as part of their marketing content through October 31, 2025. Use will attribute the author of the video using the information provided in the entry form.
  • The winner agrees to the use of his/her name, image, and/or video in any publicity material, as well as in their entry. Any personal data relating to the winner or any other entrants will be used solely in accordance with current data protection legislation and will not be disclosed to a third party without the entrant’s prior consent.
  • Announcement of winners will be published on the Flinn Scientific website and social media platforms. The winner will be notified by email within 28 days of the closing date. If the winner cannot be contacted or does not claim the prize within 14 days of notification, Flinn Scientific reserves the right to withdraw the prize from the winner and pick a replacement winner.
  • Flinn Scientific reserves the right to cancel the competition if circumstances arise outside of its control.