Chemical Changes and Properties QuizVersion en ligne Test your knowledge on chemical changes and reactions with this fun quiz game! par Daughter of The Most High 1 What happens during a chemical change? a Particles remain unchanged. b Only physical properties change. c Substances disappear completely. d Particles are rearranged when substances react. 2 What is produced when two substances react chemically? a A new substance that is unlike the originals. b The same substances. c Only energy. d A mixture of the two. 3 Which of the following is a type of chemical reaction? a Decomposition. b Sublimation. c Condensation. d Evaporation. 4 What type of energy is released during combustion? a Sound energy. b Electrical energy. c Nuclear energy. d Heat and light energy. 5 What chemical change causes iron to rust? a Reaction with heat. b Reaction with carbon dioxide. c Reaction with oxygen. d Reaction with water only. 6 What can be done to prevent food from rotting? a Keeping at room temperature. b Boiling. c Freezing or drying. d Mixing with salt. 7 What are substances that prevent rusting called? a Inhibitors. b Catalysts. c Antioxidants. d Reactants. 8 What happens to some chemicals during a reaction? a They become invisible. b They change color permanently. c They give off energy. d They absorb all energy. 9 What is an example of a natural chemical change? a Water boiling. b Sugar dissolving. c Ice melting. d Food rotting. 10 What is required for some chemical changes to occur? a Removal of oxygen. b Increase in pressure. c Cooling down. d Addition of heat energy. 11 What describes how particles are rearranged during a reaction? a Physical changes b Mechanical changes c Chemical changes d Thermal changes 12 What occurs when two substances react to form a new substance? a A physical change b A chemical change c An elemental change d A thermal change 13 What is an example of a chemical change that occurs slowly? a Rusting iron b Burning wood c Food rotting d Combustion of gasoline 14 What type of reaction is combustion? a A thermal reaction b A physical reaction c An electrical reaction d A chemical reaction 15 What do some chemical changes release during a reaction? a Energy b Volume c Mass d Pressure 16 What prevents rusting by reacting with oxygen? a Antioxidants b Acids c Catalysts d Bases 17 What can be done to preserve food from chemical changes? a Mixing b Heating c Cooling d Freezing or drying 18 What is rusting an example of? a A physical change b A thermal change c A chemical change d A mechanical change 19 What type of chemical change involves decomposition? a Condensation b Sublimation c Combustion d Rotting 20 What is released when coal burns? a Heat and light energy b Chemical energy c Magnetic energy d Sound energy
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