Quiz Review Jeopardy Game Science Final Jeopardy Physical/ Chemical Changes Reactions Words that begin with the letter “i” or “c” Acids/ Bases Applications/ Labs 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500 Changes to the shape and size of a substance or changes in the state of matter are examples of a… Physical Change 100 Features of matter that can be observed (color) and measured (volume) are a substance’s ___________ properties. physical 200 In a chemical change , a ____ ____________ is formed and the properties are different than the original substance. New substance 300 Name at least 3 examples of evidence that a chemical change has occurred. •Temperature change •Light/ Sound Produced •Unexpected Color Change •Odor Change •Gas Produced •Precipitate Formed 400 The combustibility of a substance describes its ___________ _______________. Chemical Properties 500 A reaction that absorbs energy in the form of heat . Endothermic Reaction 100 An airplane burning fuel to keep the plane moving fast enough to fly is an example of an exothermic reaction because it ___________ energy in the form of heat. Releases 200 Name at least 2 factors that affect the rate of a reaction. •Catalyst •Inhibitor •Temperature •Concentration •Surface Area 300 2H O 2 2 2H O + O 2 2 is an example of what kind of reaction? Decomposition (b/c the compound we began with broke down into simpler products) 400 FeS + 2HCl FeCl +H S 2 2 is an example of what kind of reaction? Double Replacement (b/c the elements in one compound “trade places” with elements in another compound) 500 The indicator used in the testing acids to neutralization lab which turned purple when neutral was called… Congo Red 100 We add this to a product (as we did in our last lab) when we want to measure the acidity/ basicity of a substance. Indicator 200 We add this to a reaction when we want to speed up the reaction time. Catalyst 300 Many household _________, like laundry detergent contain OHand are considered to be basic. Cleaners 400 Bases contain a OH____ and Acids contain an H+ _______. Ion 500 This is a substance that tastes sour and turns blue litmus paper red. Acid 100 This type of product will measure less than 7 on the pH scale. Acid/ Acidic 200 A substance with a pH of 7 is considered to be… Neutral 300 A lemon (pH2) is _____times more _________ than a tomato (pH4). 100, Acidic 400 Make a statement about the relationship of HCl (pH 0) and vinegar (pH3). Make sure you include a phrase stating “is ___times more _______” HCl is 1000 times more acidic than vinegar OR Vinegar is 1000 times more basic than HCl. 500 How does the indicator Phenophthalein look when a substance is neutral? Clear 100 The name for the point when a substance is neutralized is called… End Point 200 The process of adding acid to a base until the base changes color is called… Titration 300 In the flame test lab, the splint reigniting showed the presence of…. Oxygen or O2 400 Antacids are bases taken by people for what purpose? To neutralize acid/ help with a stomach ailment 500 Click on the “2” to progress to the question. The final category is: Explain the difference.. Explain how the concentration of an acid is different from its strength. An acid’s strength is the same no matter what the concentration. For example 1 M HCl and 3 M HCl are both the same strength (same amount of H+ ions produced), but one 1M is more dilute than 3M It’s concentration changes with the amount of water added to the substance.