![]() Presenter 2: So, now we have looked at how to judge hazards and risks and use control measures to minimise them, in order to keep us all working safely. ![]() Presenter 1: By not telling an adult, other people could be put at risk from an accident. ![]() Presenter 2: Accidents happen and as long as lab safety rules have been followed then nobody will get in trouble. Student 2: Miss, there's been an accident. Presenter 2: Remember, in case of accidents, firstly tell an adult. Download the song for offline listening now. Student 1: It's starting to bubble, which means it's heating up and hopefully eventually it'll start to evaporate. Play & Download In the Air MP3 Song for FREE by LAB from the album In The Air. Presenter 1: Appropriate control measures to take will be wearing safety goggles, not touching the equipment until cool and stopping heating when the salt begins to spit. Risks are higher in the experiment using a Bunsen burner. Presenter 1: Are the risks the same in these two setups? Here, you could leave the water to evaporate naturally over a week, or use a Bunsen burner in two minutes. Presenter 2: Now, let's assess the risk of this experiment – the evaporation of the water from a solution of salt. Presenter 1: Such as safety goggles, bags clear from floor and hair tied back. They are precautions we can put in place either to reduce the risk or the severity of the hazard. Presenter 2: Control measures are very important. This is a very high risk because people could cut themselves when they empty it. Presenter 1: Another example is to never put broken glass in the waste paper bin. Presenter 2: The risk is how likely a hazard will cause harm. The second thing we need to be aware of is risk. Presenter 1: This sign means that the chemical is flammable. These chemicals attack and destroy materials such as wood, metal and skin as soon as they come into contact with them. Presenter 2: This sign means that the chemical is corrosive. We should always be aware of the risks with chemicals. This is one of many important hazard symbols that can often appear on containers or equipment to tell us about the hazards. Presenter 1: Notice the symbol here on this chemical container. Presenter 2: Such as burning yourself on a Bunsen burner or other equipment that gets very hot. Presenter 1: A hazard is something that can cause harm. Always follow the lab rules.That means understanding risk and potential hazards. It is important to keep yourself and everyone around you safe and free from injury. ![]() Presenter 2: We will be looking at safety in the laboratory.
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