Monthly Archives: February 2015

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Bubble Trouble

Background: Bubbles form because of a combination of water’s hydrogen bonds** and the oily film you can see shimmer in the light. The oily film you see is actually two separate layers of soap attached to, and surrounding, hydrogen-bonded water. Adding sugar works with the soap to create an extra strong bubble. When you’re blowing a bubble inside [...]

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This week’s key element is OXYGEN

Background Information Oxygen is a diatomic molecule, meaning that two atoms of oxygen combine to form the element in its natural state. Oxygen is extremely reactive and reacts with most other elements to form oxides. Oxygen’s existence has been predicted and experimented with for thousands of years. It is always been clear that there [...]

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This week’s key element is NITROGEN

Background Information Nitrogen was discovered by Daniel Rutherford in 1772 and named by Jean-Antoine Chaptal in 1790. At room temperature, nitrogen is a gas and is odourless and colourless. It makes up around 78% of the Earth’s atmosphere and is estimated to be the 7th most common element in the entire universe. How is it [...]

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This week’s key element is CARBON

Background Information The English name carbon comes from the Latin carbo for coal and charcoal. Carbon was discovered in prehistory and was known in the forms of soot and charcoal to the earliest human civilizations. Diamonds were known as early as 2500 BCE in China, while carbon in the form of charcoal was made around [...]

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This week’s key element is BORON

 Background Information The name Boron comes from the mineral in which it was originally mined, called borax. Borax has been used for thousands of year as a glaze. A glaze is type of coating that can be used to make ceramics and vases shiny. The Chinese are believed to have used a borax glaze on [...]

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Glossary – Week 2

Acid Compound that gives off H+ ions in solution. Base Substance which gives off hydroxide ions (OH-) in solution. Atom The smallest object that retains properties of an element. Composed of electrons and a nucleus (containing protons and neutrons). Compound Two or more atoms joined together chemically, with covalent or ionic bonds. Electron One of [...]

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Measuring Volumes

Get the right quantity every time and how to read the meniscus.  

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