Chemistry Quiz
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MATTER AND ITS INTERACTIONS
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A student claims: "The reaction between baking soda and vinegar is endothermic."
Evidence collected:
1) The temperature of the mixture dropped from 24.0°C to 19.5°C without any external cooling.
2) Bubbles formed rapidly when the substances were mixed.
3) The student heard a fizzing sound.
4) The vinegar label said it was 5% acidity.
Which statement best evaluates the claim using the evidence?
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