Hazardous Substance Worksheet PDF

Name sophie Date Subject Topic :) knowledgE Hazardous Symbols Hazard symbols are developed by the United N...

Name sophie Date Subject Topic :) knowledgE Hazardous Symbols Hazard symbols are developed by the United Nations as part of standardised communication on chemical hazards. Knowledge of these symbols helps people to protect themselves and the environment from hazardous chemicals. It also facilitates international chemical trading. Most equipment and chemicals in a science laboratory are labelled with hazard symbols. We should look out for these symbols when carrying out investigations. We should also be aware of the potential dangers to health and safety that these equipment and chemicals may cause. 6 Environmental toxicity What are they? toxic to the environment - organism How to handle dispose responsibly Acutely Toxic 9 What are they? life - threatening - limited exposure How to handle avoid skin contact Gas Under Pressure 8 What are they? pressurized gas - may be cold, may be explosive when heated How to handle cylinders stored in cool areas, upright 7 Corrosive What are they? burn your skin, damage eye, corrode metal How to handle Dont pour water into acid, pour acid into water avoid skin contact, wash off with water 1 Hazardous Substance  5 Explosive What are they? explode due to fire, heat, shock and friction ( great chemical potential energy How to handle keep away from ignition sources Flammable 1 What are they? when exposed to sparks or fire, catches fire easily How to handle flammable liquid (petrol/kerosene) 3 Harmful substances / Irritant What are they? that irritate skin How to handle keep away from skin and eyes 2 Oxidising What are they? burn in the absence of air How to handle keep away from ignition sources 4 Carcinogenicity / Aspiration Hazard What are they? that can cause long term health damage-cancer, breathing difficulties How to handle Avoid contact with skin and ingestion 2 Hazardous Substance Name the hazardous symbols Name: Name: Name: explosive How to handle: How to handle: How to handle: avoid heat, fire, shocks, friction Name: flammable Name: Name: irritant How to handle: How to handle: How to handle: avoid skin and eyes Name: oxidising Name: asphiration Name: How to handle: burn in absence of How to handle: How to handle: O2 3 Hazardous Substance Match the correct description to the hazardous symbols Hazardous symbols What are they? Burns even in the absence of air, and can intensify fires in combustible materials. Have great amounts of chemical potential energy. May explode due to fire, heat, shock or friction. May irritate the skin, or exhibit minor toxicity. When exposed to heat, fire or sparks, or give off flammable gases when reacted with water. May cause burns to skin, damage the eye (which is the most vulnerable). May also corrode metals. Do not pour water into acids, and instead slowly add acids to water. Short or long term exposure may cause serious long term health effects eg breathing difficulties, cancer Substances that are toxic to organisms or may cause long lasting environmental effects. Pressurised gas may be cold when released and explosive when heated. Do not heat containers with pressurised gas. Life-threatening effects even after limited exposures such as breathing, swallowing or upon contact in some cases. 4 Hazardous Substance 5 Hazardous Substance