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 Chemical Reactions 40 Flashcards |
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What term describes a process where one or more substances change into new substances? |
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Chemical reaction |
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Which type of reaction involves two or more substances combining to form a single substance? A) Decomposition B) Combination C) Displacement D) Neutralisation |
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B) Combination |
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Riddle: I can disappear when mixed, yet can be seen forming a solid from a solution. What am I? |
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Precipitate |
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True or False: An endothermic reaction releases heat energy. |
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False. An endothermic reaction absorbs heat energy. |
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The chemical reaction where a compound splits into two or more simpler substances is called ______. |
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Decomposition reaction |
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Which of the following is an example of a displacement reaction? A) Zinc and copper(II) sulfate B) Calcium carbonate and heat C) Sodium hydroxide and hydrochloric acid D) Iron and sulfur |
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A) Zinc and copper(II) sulfate |
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What do we call a substance that speeds up a chemical reaction without being consumed in the process? |
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Catalyst |
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Fill in the blank: A reaction where an acid reacts with a base to produce salt and water is known as ______. |
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Neutralisation reaction |
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Which type of reaction involves oxidation and reduction occurring simultaneously? |
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Redox reaction |
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True or False: Basic oxides dissolve in water to form acidic solutions. |
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False. Basic oxides dissolve in water to form basic solutions. |
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Riddle: I am a type of oxide that can react with both acids and bases. What am I? |
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Amphoteric oxide |
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What type of chemical reaction occurs when hydrogen and oxygen combine to form water? |
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Combination reaction |
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Which reaction involves the formation of a solid from two solutions? |
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Precipitation reaction |
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Fill in the blank: The arrangement of metals in order of their reactivity is called the ______. |
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Reactivity series of metals |
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In a chemical reaction, the substances that undergo change are called ______. |
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Reactants |
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Which of the following is a characteristic of an exothermic reaction? A) Absorbs heat B) Releases heat C) No energy change D) Produces gas |
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B) Releases heat |
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Riddle: I’m essential for life, found in plants, and help convert carbon dioxide into glucose. What am I? |
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Chlorophyll |
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True or False: All catalysts are biocatalysts. |
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False. Only biocatalysts are catalysts that occur in living organisms. |
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Fill in the blank: A reaction where one element displaces another in a compound is called a ______ reaction. |
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Displacement |
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Which type of reaction occurs when an acid reacts with a base to form salt and water? A) Combination B) Decomposition C) Neutralisation D) Displacement |
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C) Neutralisation |
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