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Welcome to Super Scientists!. Super Safety in Science!. Learning Objective: How can we be safe in science?. Safety in Science. Safety in science lessons. How to stay safe in science lessons. Students must not enter a laboratory without permission.
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Super Safety in Science! • Learning Objective: How can we be safe in science?
Safety in science lessons How to stay safe in science lessons
Sensible and safe behaviour is expected at all times Be angelic!
Students must not eat or drink in a laboratory You might get poisoned!
Apparatus must not be touched or used without permission You might damage it!
Bags and coats must be stored safely or, you might trip over them!
Goggles must be worn and long hair tied back when instructed
All accidents and damage must be reported immediately to the teacher
All apparatus must be returned carefully and safely after practical work It keeps the technician happy!
Bench surfaces must be clean and dry at the end of the lesson
Obey any instructions given by a member of staff They may stop you from doing something silly!
You need to know what all these symbols mean to keep you safe in science.
Harmful These chemicals are similar to toxic chemicals but are less dangerous. An example of a harmful chemical is Potassium permanganate.
Irritant These chemicals cause redness or blistering of the skin. An example of an irritant is Glycerol.
Oxidising agent These chemicals help other chemicals to burn more fiercely. An example of an oxidising agent is Hydrogen peroxide.
Corrosive These chemicals attack and destroy living tissue including the eyes and skin. A example of a corrosive chemical is Sulphuric acid.
Toxic These chemicals can cause death. They may have their effects when swallowed, absorbed through the skin or breathed in. An example of a toxic chemical is Mercury.
Flammable These chemicals catch fire easily. An example of a flammable chemical is Methylated spirit.
Radioactive These substances can cause burns and cancer. An example of a radioactive substance is Uranium.
Harmful to the environment These chemicals will damage plant or animal life. An example of this is Copper (II) sulphate.
Super science diagrams • Learning objective: How can we show another scientist what equipment we have used and how to set it up?
Diagrams • You need a sharp pencil, ruler and a pen. • Diagrams should be 2D and drawn with a pencil and a ruler and not shaded. • You should always fully label a diagram. • The names of the equipment should be written in pen. = Round bottom flask Liquid
What is this? Look at the diagrams. Can you match it with the equipment? 1. 3. 5. 2. 4.
Measuring volumes of liquids. • Learning objective: How can we measure the volume of liquids? • Can you measure liquids precisely?
Anagrams • bbuunnneerrs • iodprt • zeaug • eeabrk • tteeutbs • aattufmsy • gggoels
How can we measure volume? • Units = cm3
Reading volumes • You get a more accurate reading if you bend down so that your eye is level with the liquid in the measuring cylinder.
Precise reading • If you look carefully at the liquid in a tube, it seems to go up at the sides of the tube. The curved shape it makes is called the meniscus. You should take your reading from the bottom of the meniscus.
What is the volume? • Fill the container with the different liquids. • Tip them into the measuring cylinder. • Read off the volume that the container holds. • Record your results in your • booklet.
Measuring Temperature. • Learning objective: How we measure temperature?
Thermometer safety rules • Never put a thermometer down where someone can knock it off the bench. • Make sure your thermometer has a safety ring fitted. • If you break a thermometer, ALWAYS tell your teacher. Do not try to clear it up yourself.
Magnesium and acid • Measure 10cm3 of acid into the test tube. • Take the temperature, write down your result. • Add your magnesium strip. • Take the temperature every 30 seconds. 10cm3 of acid magnesium
Have a go! • Can you read the thermometers on your worksheet?
Measuring Time! • Learning Objective: How can we measure time? • What are some different units of time?
What are the units of time? Milliseconds Degrees Days Centimetres Minutes Grams Years Kilograms Newtons Hours Meters Seconds
How can we measure time? • Units = seconds
How do you use a stopwatch? • You need to know how to start, stop and re-set.
How long does you shape take to fall to the bottom of the measuring cylinder? Water Paste
Measuring mass. • Learning objectives: How can we measure mass? • Can you read some different masses and use the correct units?
How can we measure mass? • Units = kg