TCAP Science Grade 8 Practice Questions - Tennessee Comprehensive Assessment Program (TCAP) Science, Grade 8 Exam

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A student places an antacid tablet into a beaker of water and observes gas bubbles forming immediately. Which statement best describes what occurred in the beaker?

A chemical reaction occurred because a new gas substance was produced. A physical change occurred because the water changed color. A chemical reaction occurred because the mass of the water doubled. A physical change occurred because the tablet melted into liquid.

Correct Answer:

A chemical reaction occurred because a new gas substance was produced.

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