Too Hot/Too Cold

Three things that heat up at different rates are: different kinds of metals, food and chargers when they are connected to the wall outlet. More than anything, metal heats up the quickest. The metal can be close to something warm or hot and it instantly begins heating up so when a metal is being heated up, its rate is fast. When your heating up food, it takes a little more time because its a substance that has more layers then metal. As in layers i mean that heat takes time to get into the food and heat it. Now when, a charger is connected to the wall outlet, it doesnt heat up quickly. It takes time for the charger to heat up.