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Questions and Answers
In a chemical reaction, what does the term 'stoichiometry' refer to?
In a chemical reaction, what does the term 'stoichiometry' refer to?
- The study of the rate of reaction in a closed system
- The study of the movement of reactant molecules
- The study of the physical properties of the reactants
- The numerical relationship between reactants and products in a chemical reaction (correct)
What does the symbol '->' represent in a chemical equation?
What does the symbol '->' represent in a chemical equation?
- A reversible reaction
- An irreversible reaction (correct)
- A catalyst in the reaction
- The temperature at which the reaction occurs
What happens to the mass during a chemical reaction?
What happens to the mass during a chemical reaction?
- Mass fluctuates depending on the type of chemical reaction
- Mass remains constant as mass is neither created nor destroyed in a chemical reaction (correct)
- Mass decreases as the reactants are used up
- Mass increases due to the formation of new substances
In a chemical reaction, what is the term for the minimum amount of energy required to start a reaction?
In a chemical reaction, what is the term for the minimum amount of energy required to start a reaction?
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What is a catalyst in the context of chemical reactions?
What is a catalyst in the context of chemical reactions?
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What is the term for a chemical reaction in which heat energy is released to the surroundings?
What is the term for a chemical reaction in which heat energy is released to the surroundings?
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