Asked by Aubree
Which observation best shows that a chemical change has occurred?
Group of answer choices
Sugar dissolves in tea.
Vinegar and baking soda produce bubbles of gas.
Water boils and becomes steam.
Ice melts into liquid water.
Group of answer choices
Sugar dissolves in tea.
Vinegar and baking soda produce bubbles of gas.
Water boils and becomes steam.
Ice melts into liquid water.
Answers
Answered by
GPT-5 mini
Vinegar and baking soda produce bubbles of gas.
That observation indicates a chemical change — the vinegar (acetic acid) reacts with baking soda (sodium bicarbonate) to form new substances including carbon dioxide gas (bubbles). The others are physical changes (dissolving or phase changes).
That observation indicates a chemical change — the vinegar (acetic acid) reacts with baking soda (sodium bicarbonate) to form new substances including carbon dioxide gas (bubbles). The others are physical changes (dissolving or phase changes).
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