tijuan mixed a solid and a liquid together in a beaker. he determined that a chemical change occurred. if…

tijuan mixed a solid and a liquid together in a beaker. he determined that a chemical change occurred. if his conclusion is correct, which substances could he have been observing and why? ice mixed into warm oil, because the change of state that occurred when the ice melted cannot be reversed baking soda mixed into vinegar, because the production of bubbles indicates that a new substance formed sugar mixed into hot water, because the disappearance of solid indicates that the chemical identity of the sugar changed sand mixed into water, because when sand was added the mass of the beaker increased

tijuan mixed a solid and a liquid together in a beaker. he determined that a chemical change occurred. if his conclusion is correct, which substances could he have been observing and why? ice mixed into warm oil, because the change of state that occurred when the ice melted cannot be reversed baking soda mixed into vinegar, because the production of bubbles indicates that a new substance formed sugar mixed into hot water, because the disappearance of solid indicates that the chemical identity of the sugar changed sand mixed into water, because when sand was added the mass of the beaker increased

Answer

Answer:

B. baking soda mixed into vinegar, because the production of bubbles indicates that a new substance formed

Explanation:

Step1: Define chemical change

A chemical change results in a new substance.

Step2: Analyze ice - oil mixture

Melting ice in oil is a physical state change, not chemical.

Step3: Analyze baking soda - vinegar

Baking soda (sodium bicarbonate) reacts with vinegar (acetic acid) to form carbon dioxide gas (bubbles) and new substances.

Step4: Analyze sugar - water

Sugar dissolving in water is a physical change, sugar's chemical identity doesn't change.

Step5: Analyze sand - water

Adding sand to water just increases mass, no new substance formed, physical change.