Question

zeke is heating oil in a cast - iron skillet. he notices that the skillets handle quickly becomes too hot to touch. he knows that the rest of his pans have plastic handles. zeke wonders how metal and plastic heat up and cool down differently. so he decides to design an experiment. he has the following supplies available: a metal spoon, a plastic spoon, hot water, a bowl, a thermometer, a stopwatch. using only these supplies, which questions can zeke investigate with an experiment? select all that apply. does hot water dissolve more sugar when stirred with a metal spoon than when stirred with a plastic spoon? does a metal spoon heat up faster in hot water than a plastic spoon does? does a metal spoon heat up faster when placed in hot water than it does when placed in hot vinegar? does a plastic spoon cool down faster after being removed from hot water than a metal spoon does?

Explanation:

Step1: Analyze available supplies

Supplies are metal spoon, plastic spoon, hot water, a bowl, a thermometer, a stopwatch.

Step2: Evaluate each question

• For "Does hot - water dissolve more sugar when stirred with a metal spoon than when stirred with a plastic spoon?", sugar is not among supplies, so cannot test.
• For "Does a metal spoon heat up faster in hot water than a plastic spoon does?", can use hot water, metal spoon, plastic spoon, thermometer and stopwatch to measure and compare heating - up times.
• For "Does a metal spoon heat up faster when placed in hot water than it does when placed in hot vinegar?", hot vinegar is not among supplies, so cannot test.
• For "Does a plastic spoon cool down faster after being removed from hot water than a metal spoon does?", can use hot water, metal spoon, plastic spoon, thermometer and stopwatch to measure and compare cooling - down times.

Answer:

Does a metal spoon heat up faster in hot water than a plastic spoon does?
Does a plastic spoon cool down faster after being removed from hot water than a metal spoon does?