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Questions and Answers
What is a chemical reaction?
What is a chemical reaction?
- The process by which atoms of one substance are rearranged to form the same substance
- The process by which atoms of one substance are rearranged to form a different substance
- The process by which atoms of multiple substances combine to form a single substance
- The process by which atoms of one or more substances are rearranged to form new substances (correct)
What are some possible indications that a chemical reaction has occurred?
What are some possible indications that a chemical reaction has occurred?
- Color change, production of an odor, and plus signs used in equations
- Absorption of heat, color change, and production of an odor (correct)
- Release of energy in the form of light or heat, appearance of gas bubbles or a solid, and plus signs used in equations
- Appearance of gas bubbles or a solid, absorption of heat, and release of energy in the form of light or heat
How are chemical reactions represented?
How are chemical reactions represented?
- Using statements called equations to represent the reactants and products formed during the reaction (correct)
- Using plus signs to separate the different reactants or products
- Using arrows to separate the reactants and products formed during the reaction
- Using numbers to indicate the quantity of each substance involved
What are some possible indications that a chemical reaction has occurred?
What are some possible indications that a chemical reaction has occurred?
What is the purpose of using arrows in chemical equations?
What is the purpose of using arrows in chemical equations?
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