 I have 20 ml of water and 20 ml of oil and I want to increase the temperature of both of these liquids by 4.5 degree Celsius. Can you predict which will take a longer time? Which liquid between these two will take a longer time to change the temperature by 4.5 degree Celsius? Okay, let's see. Let's start with 20 ml of water. Okay, here is the setup. You can also have like a container and heat it in your kitchen very safely. Before we start heating the water, we want to note down its initial temperature so that we can ensure that even oil starts with that temperature. So it's around 30.5 degree Celsius. Alright, now we can start heating it and we want the temperature to change by 4.5 and we'll note down the time that it takes to do that. So let's do that. Here is the thermometer. Alright, we have almost reached 35. So it took 1 minute to change the temperature of 20 ml of water from 30.5 to 35. Took 1 minute. Now let's take 20 ml of oil. Here again, we will measure the initial temperature of the oil first. Make sure it is 30.5. Alright, we can start off now. So let's light up the candle, place it below the beaker and as soon as the oil starts getting heated, start the timer and note the change in temperature. So let's do that. Okay, I've started the timer already and also started looking at the temperature in the thermometer. Alright, so it has reached 35. Alright, so it took 46 seconds. It took 46 seconds for 20 ml of oil to change its temperature from 30.5 to 35 degree Celsius. Why was the time difference? Why did the oil take less time than water? What do you think?