We will start with one and then I will add more over the next few days. Day One – A Cells Blooket. Day Two – Chemical Reactions Blooket. Day Three – Atoms & Molecules Quizizz. Day Four – Light & Colour Kahoot.
Author:SFScience
Retired Schoolmaster living in Wiltshire and Vendee France
Fractional Distillation…
Fractional distillation is the process used to separate the many liquid components of crude oil; and nitrogen, oxygen and argon from liquid air. Simple distillation in the laboratory can also be adapted to separate mixtures of miscible liquids.
Distillation…
When you need to separate the solvent from a solution then distillation is the way to go. The solvent evaporates, leaves the solute behind, and can be condensed in a separate container.
Even-Toed Ungulate…
The evolution of camels is particularly well documented with many connected examples of their species’ development visible through the fossil record. There were camel-like antelope grazing on the plains of North America over 40 million years ago. They have been so successful because they are well adapted to their environment. The two types of camel …
Continue reading Even-Toed Ungulate…
The Dzhanibekov Effect…
Also known as the Tennis Racket Theorem. Or intermediate axis theorem. When a gyroscope spins it stays upright because the spinning weight at its core resists any attempts to knock it off its access. This is called rotational inertia. Inertia refers to the tendency for moving objects to remain moving or stationary ones to remain …
Continue reading The Dzhanibekov Effect…
Hydrocarbon Explosions…
I think I have shown you this high speed video of a YouTube scientist igniting mixtures of hydrocarbon gases and air. He does this because it is fun, and because it shows the different energies released with different mixtures. This shuttle launch shows the incredible energy released when hydrogen is combined with oxygen. The reaction is exothermic, …
Continue reading Hydrocarbon Explosions…
The Dreaded Suck-Back…
If you heat a boiling tube, and it has a delivery tube submerged in water, then you need to be wary of suck-back. When you stop heating, the contents of the boiling tube cool and the air contracts. This draws water up the delivery tube and into the hot glass boiling tube. Hot glass does …
Continue reading The Dreaded Suck-Back…
Cows – Nature’s Most Noble Beasts…
Some of you will know that cows are my favourite animals so you can imagine how delighted I was to see a headline a few years ago in the Telegraph… “McDonald’s launches study into flatulent cows used in its burgers” This seems to include several of my favourite scientific themes; namely cows, the scientific method, food and burping (eructation). What …
Continue reading Cows – Nature’s Most Noble Beasts…
Carbohydrate…
If you look at the word carbohydrate you can probably work out what elements it must be made from. The letters ate at the end of a compound indicate that there is oxygen built into the molecule. Examples would be copper sulfate (copper, sulfur & oxygen) or calcium carbonate (calcium, carbon & oxygen). Carbohydrate does …
Continue reading Carbohydrate…
Various Reagents…
There are numerous chemicals that are used in science practical work but which only get the briefest of mentions. I thought it might be useful to make a list of some here so that you can learn what they all do. Solvents We use various solvents (to dissolve things) with water being the most obvious. …
Continue reading Various Reagents…