URGENT
Cards (34)
- What is always formed in a chemical reaction?
- Why are most chemical changes considered irreversible?
- How can you tell that a chemical reaction has occurred?
- What type of energy change is usually involved in chemical reactions?
- What is an exothermic reaction?
- What is an endothermic reaction?
- What happens in a displacement reaction?
- What are the reactants in a chemical equation?
- What are the products in a chemical equation?
- What does the word equation for iron and copper sulphate represent?
- What occurs to atoms during a chemical reaction?
- What is the formula equation for hydrochloric acid and sodium hydroxide?
- What is thermal decomposition?
- What is produced when green copper carbonate is heated?
- How can carbon dioxide gas be identified during thermal decomposition?
- What type of reaction is thermal decomposition?
- What is combustion?
- What are the products of combustion of fossil fuels?
- What three elements are needed for a fire to burn?
- What is the Fire Triangle?
- Why should water not be used on petrol fires?
- How do foam, powder, or CO2 extinguishers work?
- What is rusting?
- What is the scientific name for rust?
- How can rusting be prevented?
- In what type of water does iron rust faster?
- What type of reaction is rusting?
- What is a catalyst?
- How do catalysts affect chemical reactions?
- What are biological catalysts called?
- Why do some reactions require high temperatures?
- What is the benefit of using a catalyst in industry?
- What do catalytic converters do in cars?
- What metals are commonly found in catalytic converters?