Hazards and risks

• What do hazard symbols warn about?

  Dangers of a substance
• What is risk in the context of hazards?

  Chance that a hazard will cause harm
• What do risk assessments describe?

  How to reduce the risk of harm
• What is a hazard?

  Something that can cause harm or damage
• What can a hazard cause?

  Harm, damage, or adverse health effects
• What are concentrated acids classified as?

  Corrosive
• Why are strong acids and alkalis considered hazardous?

  They can damage skin and clothes
• What is the purpose of hazard symbols on containers?

  Indicate dangers and safe handling information
• How do hazard symbols communicate dangers?

  They provide warnings without needing text
• What are the potential effects of a hazard?

  • Harm to someone
  • Damage to something
  • Adverse health effects
• What are the key functions of hazard symbols?

  • Warn about dangers
  • Provide safe handling information
  • Communicate risks visually
• What do hazard symbols warn about?

  They warn about the dangers of a substance
• What is risk in the context of hazards?

  Risk is the chance a hazard will cause harm
• What do risk assessments describe?

  They describe hazards, risks, and precautions
• What factors should be considered when evaluating a risk?

  The way the hazard causes harm and its likelihood
• What is a precaution?

  A precaution reduces the risk of harm
• Why do different substances need different precautions?

  Because they pose varying levels of risk
• What is a risk assessment?

  It assesses likelihood of harm from hazards
• What is one possible precaution when using hazardous substances?

  Using less hazardous substances
• How can the risk of harm from hydrochloric acid be reduced?

  By diluting the acid with water
• What is a suitable precaution when heating ethanol?

  Use a hot water bath instead of a Bunsen burner
• What are the key components of evaluating risks in a practical procedure?

  • Identify hazards
  • Assess likelihood of harm
  • Determine severity of effects
  • Suggest suitable precautions
• What are some possible precautions to reduce risks in experiments?

  • Use less hazardous substances
  • Wear protective gear (gloves, goggles)
  • Choose safer apparatus or methods
• What is the relationship between hazards and risks?

  • Hazards have potential to cause harm
  • Risks are the likelihood of that harm occurring
• Hazard symbols

  A) serious health

  B) moderate health

  C) toxic

  D) corrosive

  E) flammable

  F) oxidising

  G) Harmful to the environment