Physical scienceOnline version The game is a quiz about physical science by Bryson Dancie 1 Which observations could be evidence of a chemical reaction? Select all that apply. Choose one or more answers a A substance dissolved b A precipitate formed c A substance changed state d A gas was produced 2 Select the correct terms to complete each sentence. The burning of the candle shows a _____ a chemical reaction b physical change 3 The _____ indicates a chemical reaction may be occurring. a change of state b generation of light and heat 4 Select the correct terms to complete each sentence. The burning of the candle shows a _____ a physical change b chemical reaction 5 Select the correct terms to complete each sentence. The melting of the wax shows a ______ a physical change b chemical reaction 6 What happens when the baking soda and vinegar are mixed? The baking soda and vinegar react with each other and ____ a one dissolves while the other does not b Forms a new substance c nothing happens d 7 The hot metal in the photo cools quickly and soon stops glowing. What happens to the energy as the metal parts cool? a The energy gets destroyed when cooled b The energy bundles up and freezes c The energy builds up in the metal. d The energy in the hot metal leaves the metal. 8 Matter definition: Something that has mass and takes up space a True b False 9 Chemical reaction definition: the process by which one or more substances change physically a True b False 10 Heat definition: the energy transferred between objects that are at different temperatures a False b True 11 What happens when the baking soda and vinegar are mixed? Written answer 12 Describe what changes are happening in the photo. Select all that apply Choose one or more answers a The wood is physically changing b The wood is generating light and heat c The wood is burning and changing into dust. d The wood is not combusting 13 Why doesn’t a change in a physical property change the identity of the substance? Written answer 14 Which changes have happened to the bucket? Select all that apply. Choose one or more answers a parts of the bucket broke off b the metal changed to a different state c the metal was dented and bent d the color changed to a darkish, reddish color 15 What change is taking place in the bottom left photo? a physical b chemical Feedback 1 If you got this wrong, you're acoustic
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