a good grounding in chemical sciences can open the door to a vast and varied range of options - far wider than you may have realised. careers in sportswear development, forensics, drug discovery, biotechnology, and art restoration represent a handful of fields open to students with post-16 qualifications in chemistry. during your higher education you will also acquire an excellent range of transferable skills which are highly attractive to potential employers. skills such as numeracy, observation, problem solving, communication, data handling and team work.
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your next assignment is about levers. a lever is a simple machine that usually consists of a rigid bar or rod that rotates about a fixed pivot point called the fulcrum (or pivot). if you apply a force to a lever it will rotate about the fulcrum. common examples of levers are seesaws, wheelbarrows, crowbars and nutcrackers. The advantage of using a lever is that with a small amount of effort, you can move a very big load. e.g. with a crowbar, a relatively small effort is applied at the end farthest from the fulcrum to lift a heavy weight that is close to the fulcrum. many common tools and instruments utilise the principle of the lever.
here’s an animation that demonstrates how the torque (force x distance)on one side of a see-saw must equal the torque on the other if the see-saw is to remain balanced.
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moisture sensor kits (20 in a pack) available from rapid electronics
you can download a pdf for the moisture sensor teacher guide here
all their projects are on this cdrom that you have to buy
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The dyes required to run alongside Smarties are:
• E104 Quinoline yellow
• E122 Carmoisine
• E110 Sunset yellow
• E124 Ponceau-4R
• E120 Cochineal
• E133 Brilliant blue FCF
These should be made up as approx. 0.5 % solutions.
Sets of the six dyes are available from:
Sensient Colors UK
Oldmeadow Road
Kings Lynn
Norfolk PE30 4LA
Contact Sarah Armstrong
Customer Care Manager
Tel 01553 669444
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