A student combines two liquids in a beaker. She observes that the mass of the combined liquid is less than the mass of the two separate liquids. The student claims that this observation shows that matter is not conserved in chemical reactions. Which statement explains why the student’s claim is incorrect?(1 point)ResponsesThe reaction produced a gas that escaped the beaker.The reaction produced a gas that escaped the beaker.The product contained fewer atoms than the reactants.The product contained fewer atoms than the reactants.The reaction did not change the physical properties of the liquids.The reaction did not change the physical properties of the liquids.The combined liquid was warmer than the two separate liquids.
The reaction produced a gas that escaped the beaker.
This statement explains why the student's claim is incorrect because the mass of the gas that escaped the beaker was not accounted for in the observation. Matter is conserved in chemical reactions, including any gases that may be produced and escape the reaction vessel.