University of Waterloo Timeline of Elements Update

The Chemistry department at the University of Waterloo is doing another collaborative periodic table project! If you missed out on participating in our 2011 Periodic Table Project, this is your opportunity to have your students celebrate and be part of a worldwide initiative.

This link provides details on of the contest:   2019 International Year of the Periodic Table Timeline of Elements | Chemistry

Contest Update

U of W has received over 200 applications for 118 elements for our 2019 International Year of Periodic Table project. There will be representation from 26 countries, 38 US states and all Canadian provinces and territories. There still is a way for all your students to participate in the timeline — Mendeleev Mosaic.

Click here for further update details

STAO has Oxygen

The Science Teachers’ Association of Ontario has the oxygen tile. Contact Karen_Dodds@stao.org with any questions. Schools can hand in their completed tiles to the STAO Curriculum Coordinator Michael Franfort at michael_frankfort@stao.org.

The STAO deadline is Friday, February 22, 2019. This will give STAO one week to decide which tile to submit on behalf of Ontario teachers. You can find out more at the STAO conference playground or Chem 13 News exhibit booth at the annual STAO conference this November.

 

Carbon Dioxide Solubility Demonstration – submitted by Flinn Scientific Canada

A candle and beaker of pink phenolphthalein solution are placed inside a jar. The candle is lit and the jar is capped. The flame expectedly goes out as the oxygen is depleted. After the flame is extinguished, the pink solution slowly fades to colourless. What has happened inside the jar?

Click here to go to the source of ‘Carbon Dioxide Solubility Demonstration’. 

 

Website:  https://www.flinnsci.ca/

Facebook: https://www.facebook.com/flinnscientificcanada

 

 

How do cigarettes affect the body? – TED Ed by Krishna Sudhir

Cigarettes aren’t good for us. That’s hardly news — we’ve known about the dangers of smoking for decades. But how exactly do cigarettes harm us, and can our bodies recover if we stop? Krishna Sudhir details what happens when we smoke — and when we quit. Lesson by Krishna Sudhir, directed by TED-Ed. Continue reading

How UV Causes Cancer and Aging

UV at ground level is non-ionizing but it damages DNA and causes photoaging – how? Also, it turns out glass doesn’t block all UV (specifically UVA passes through). This is something I learned filming with the UV camera inside. Continue reading

2 farmers weigh in on the pesticide vs. organic debate: Opinion | CBC News

We asked two farmers on either side of the pesticide/herbicide debate — who happen to live in the same part of Saskatchewan — their thoughts on this issue. Here’s what they had to say.

Source: 2 farmers weigh in on the pesticide vs. organic debate: Opinion | CBC News

How hydrogen could shake up Canada’s energy sector | CBC News

The use of hydrogen is still in its infancy, but the potential is significant for how one of the most abundant elements in the world could change the country’s transportation, electricity and energy sectors.

Source: How hydrogen could shake up Canada’s energy sector | CBC News

Why don’t poisonous animals poison themselves? – TED Ed by Rebecca D. Tarvin

Thousands of animal species use toxic chemicals to defend themselves from predators. Snakes have blood clotting compounds in their fangs, the bombardier beetle has corrosive liquid in its abdomen and jellyfish have venomous, harpoon-like structures in their tentacles. But how do these animals survive their own poisons? Continue reading