Consider the following pairs of materials. Which pair represents two materials, one of which is twice as hot as the other? (a) boiling water at 100°C, a glass of water at 50°C (b) boiling water at 100°C, frozen methane at -50°C (c) an ice cube at -20°C, flames from a circus fire-eater at 233°C (d) none of those pairs

it is important not to undercook chicken, otherwise you might get very sick. The inside of the chicken has to be at a certain temperature (75 C or 165 F) to make sure it is safe. Why can’t you just wait until the outside of the chicken is at this temperature? Why isn’t the entire chicken at the same temperature while it is being cooked?

Your car’s radiator is made of steel and is filled with coolant. You fill the radiator to the very top with coolant, then drive off without remembering to replace the cap. As the coolant and steel radiator heats up, will the level of coolant drop or rise and overflow? why? what is a radiator is and what purpose does it serves in a car?  Here is a good start: https://youtu.be/y5p31F_dVJU