DNA replication and Protein Synthesis

 Its been a busy week of covering DNA replication and Protein synthesis, my models have been duplicated, copied and translated almost as many times as a real cell this week. @chatbiology #Science #STEM

Electrostatics

 #Physics is all about learning about electrostatics. Learning about like charges repel and unlike charges attract is such a keystone fundamental idea. #iteachphysics #Science #STEM

Evolution Day

 Its #EvolutionDay 162 years after the publication of The Origin of Species - A hard book to read. I like to show my students the fossils still in the rocks. #Science #STEM

Red Cabbage Indicator

 Its that time of year to cut up the red cabbage and make red cabbage indicator. Fun but smelly.

Blend a leaf of red cabbage with 100 ml distilled water. Filter (cheese cloth recommended). The resulting solution displays pretty much a full range of colours from pH 1 to14. Some people recommend boiling the cabbage but it is not necessary 

#Science #STEM

Best Mixer

 Mixing the same solution using different methods, by hand, using a magnetic stirrer and a vortex mixer. Which is best ? I find out #iteachphysics #iteachchemistry #Science #STEM

Learning how to use a pipette

 Learning how to use a pipette and get the meniscus at the correct level. This certainly takes some practice. #iteachchemistry #Science #STEM

Determining the Molecular weight of a volatile substance

 Determining the Molecular weight of a volatile substance using the steam generator. Problem here is making the students wait until it is hot enough. A known amount of a volatile liquid is injected into the gas syringe at 100C. The volatile liquid evaporates and turns to gas and the volume is measured. #iteachchemistry #Science #STEM