It’s in our tap water, toothpaste and even in tea. Fluoride has helped reduce cavities in children for decades but some worry that fluoridated drinking water can lead to health issues. What is the verdict of the scientific community? (3:14 min.)

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The elements had been listed and carefully arranged before Dmitri Mendeleev. They had even been organized by similar properties before. So why is Mendeelev's periodic table the one that has endured? (4:24 min.)

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This video uses thermal imaging to show why it is important to stir mixtures using examples of an acid and an alkali in water. (6:09 min.)

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Four elements were officially added to the periodic table in 2016. But could there be more elements waiting to be discovered? And why do we bother looking anyway? (5:19 min.)

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CurioCity resources which align with the British Columbia Chemistry 11 content area: Atoms and Molecules

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CurioCity resources which align with the Yukon Chemistry 11 content area: Atoms and Molecules

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CurioCity resources which align with Quebec's Secondary IV Science and Technology content area: The Material World.

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CurioCity resources which align with the Yukon Grade 9 Science Curriculum Content area on atoms and elements.

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The periodic table just got four new elements, but this isn't as groundbreaking as recent headlines would have you believe. Join Speaking of Chemistry's resident killjoy to find out why. (2.50 min.)

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CurioCity resources which align with the British Columbia Science 9 Curriculum Content area on atoms and elements.

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