A student has an unknown powder and wants to determine what it is. Based on appearance, the student believes it is baking soda. When performing the vinegar test, what can the student expect to happen if it is baking soda?(1 point)
Responses
it will crystallize into a sugar-like substance
it will crystallize into a sugar-like substance
it will turn a blue-black color
it will turn a blue-black color
it will turn into a solid glass-like substance
it will turn into a solid glass-like substance
it will bubble and foam
it will bubble and foam
The correct answer is: it will bubble and foam.
The correct answer is "it will bubble and foam".
To perform the vinegar test on the unknown powder, the student can follow these steps:
1. Take a small amount of the powder and place it in a container or dish.
2. Add a few drops of vinegar to the powder.
3. Observe the reaction and record what happens.
When baking soda (sodium bicarbonate) reacts with vinegar (acetic acid), it produces carbon dioxide gas. This gas is released as bubbles and causes the mixture to foam up. The reaction can be described as a fizzing or effervescence.
So, if the powder is indeed baking soda, the student can expect it to bubble and foam when vinegar is added as a result of the carbon dioxide gas being produced.