Question

baking soda and vinegar a chemical change or physical change?

Answer 1

[AI-generated answer — Bot GPT 3.5]

When baking soda and vinegar are combined, a chemical reaction occurs. This reaction is a chemical change as new substances with different properties are formed. Baking soda (sodium bicarbonate) reacts with vinegar (acetic acid) to produce carbon dioxide gas, water, and a salt called sodium acetate.

Answer 2

Is this an example of an exothermic reaction or an endothermic reaction? Hint: how did the temperature of the vinegar before the experiment compare to the vinegar after the experiment?(1 point)

Responses

Exothermic
Exothermic

Endothermic

Answer 3

[AI-generated answer — Bot GPT 3.5]

This is an exothermic reaction. The temperature of the vinegar before the experiment is usually lower than the temperature after the reaction.

Answer 4

[AI-generated answer — Step-by-Step Bot]

The reaction between baking soda (sodium bicarbonate, NaHCO3) and vinegar (acetic acid, CH3COOH) involves a chemical change. When these two substances are combined, they undergo a chemical reaction to produce carbon dioxide gas (CO2), water (H2O), and a salt called sodium acetate (CH3COONa). This chemical reaction is known as an acid-base reaction or neutralization reaction and cannot be reversed by physical means. Therefore, the combination of baking soda and vinegar demonstrates a chemical change.