When performing a scientific investigation on an unknown substance, how can an indicator help you determine if the substance is a starch?(1 point)
Responses
The indicator will change the taste of the substance.
The indicator will change the taste of the substance.
The indicator will change the smell of the substance.
The indicator will change the smell of the substance.
The indicator will change the state of the substance.
The indicator will change the state of the substance.
The indicator will change the color of the substance.
3 answers
The indicator will change the color of the substance.
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 turn a blue-black color
it will turn a blue-black color
it will bubble and foam
it will bubble and foam
it will turn into a solid glass-like substance
it will turn into a solid glass-like substance
it will crystallize into a sugar-like substance
Responses
it will turn a blue-black color
it will turn a blue-black color
it will bubble and foam
it will bubble and foam
it will turn into a solid glass-like substance
it will turn into a solid glass-like substance
it will crystallize into a sugar-like substance
it will bubble and foam
1 answer