6.1.1 Defining the rate of a chemical reaction

• What is a chemical change?

  When something changes into something completely new
• What happens to iron when it rusts?

  It transforms into iron oxide
• How does concentration affect the rate of reaction?

  More reactants lead to a faster reaction
• If a reaction takes 10 seconds, how does its rate compare to one taking 1 minute?

  It is faster than the 1-minute reaction
• What is the definition of the rate of a chemical reaction?

  • Measures how fast a chemical change occurs
  • Indicates how quickly reactants convert to products
• How does pressure affect gas reactions?

  Gases react faster under higher pressure
• What are factors that affect the rate of reaction?

  Concentration, temperature, pressure, surface area, catalyst
• How can controlling reaction rates save time and money in manufacturing?

  By producing more goods faster
• How does temperature affect the production of plastic toys?

  Higher temperatures can speed up production
• What are reaction rates?

  The speed at which reactants turn into products
• How does temperature influence the rate of reaction?

  Higher temperature speeds up reactions
• How does understanding reaction rates advance scientific research?

  It helps develop new materials and medicines
• Why is it important to know reaction rates in industries?

  It helps optimize processes for faster production
• What is one method to preserve food by controlling reaction rates?

  Storing foods at low temperatures
• What happens when you chop vegetables into smaller pieces?

  They cook faster
• How do reaction rates impact both manufacturing and food preservation?

  They determine efficiency and longevity of products
• What effect does boiling water have on tea brewing?

  It makes tea brew faster
• What does a faster rate of reaction indicate?

  Reactants turn into products more quickly
• What happens to reactions that cause food spoilage at low temperatures?

  They slow down, keeping food fresh longer
• How does understanding reaction rates help in food preservation?

  It allows lowering rates that cause spoilage
• How do chemical changes differ from physical changes?

  Chemical changes create new materials, physical do not
• How is a catalyst similar to a sports coach?

  Both help improve performance without being used
• Why do chemical changes result in different properties?

  Because new substances are formed with different compositions
• What is a catalyst?

  A substance that speeds up reactions
• What does the rate of reaction measure?

  How fast a chemical change happens
• How does a catalyst function in a reaction?

  It speeds up reactions without being used up
• How does surface area influence the rate of reaction?

  Smaller pieces of solids react quicker
• What is created during a chemical change?

  New substances with new properties