Which of the following is a balanced equation for the combustion of methane (CHâ‚„)?
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In the balanced combustion reaction of methane, one molecule of methane reacts with two molecules of oxygen to produce one molecule of carbon dioxide and two molecules of water.
What type of reaction is represented by the equation: 2H₂ + O₂ → 2H₂O?
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A synthesis reaction is one in which two or more simple substances combine to form a more complex substance. Here, hydrogen and oxygen gases combine to form water.
In a chemical reaction, the substances that are present at the beginning and undergo change are called:
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Reactants are the starting materials in a chemical reaction that react to form products.
Which of the following represents a double displacement reaction?
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In a double displacement reaction, parts of two compounds switch places to form two new compounds.
What is the law that states that mass is neither created nor destroyed in a chemical reaction?
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The Law of Conservation of Mass states that the mass of the reactants in a chemical reaction must equal the mass of the products.