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during an investigation, a scientist numbers three beakers. next, she pours 150 ml of liquid into each
beaker. each liquid is different.
then, the scientist adds 5 grams of white solid baking soda (nahco: ) to each beaker and stirs. she
observes the results.
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in which of the beakers does the scientist observe clear evidence of a chemical reaction?
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a beaker 1 only
b. beaker 2 only
c. beaker 3 only
d. beakers 2 and 3
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