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Questions and Answers
What is the main difference between a physical change and a chemical change?
What is the main difference between a physical change and a chemical change?
Which of the following is an example of a chemical change?
Which of the following is an example of a chemical change?
What is a chemical bond?
What is a chemical bond?
Which of the following is NOT a sign that a chemical change has occurred?
Which of the following is NOT a sign that a chemical change has occurred?
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What is the fundamental difference between a mixture and a compound?
What is the fundamental difference between a mixture and a compound?
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What is the significance of the formation or breaking of chemical bonds?
What is the significance of the formation or breaking of chemical bonds?
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What is the primary evidence that a chemical change has occurred during the burning of charcoal?
What is the primary evidence that a chemical change has occurred during the burning of charcoal?
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Which of the following is NOT considered a chemical change?
Which of the following is NOT considered a chemical change?
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What is the purpose of the arrow in a chemical equation?
What is the purpose of the arrow in a chemical equation?
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What is the law of conservation of mass?
What is the law of conservation of mass?
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What is the ratio of carbon (C) atoms to oxygen (O) atoms in a carbon dioxide (CO2) molecule?
What is the ratio of carbon (C) atoms to oxygen (O) atoms in a carbon dioxide (CO2) molecule?
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What is the purpose of a chemical equation?
What is the purpose of a chemical equation?
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