Which form of energy is transferred when a ice cube at 0’C is placed in a beaker of water at 50’C 1 chemical
2 electrical
3 nuclear
4 thermal

4. thermal

Explanation:

When there is a difference in the temperatures of an object and the environment, heat is transferred. The transfer of heat is the form of transfer of thermal energy. The energy from the hotter object gets transferred to the cooler object. This is the process of transfer of heat. In this process, the object that is hotter is likely to get cool and vice-versa.  

As per the given statement, when an ice cube is placed in a weaker of water, the transfer of thermal energy will take place. Here, ice cube is the cooler object and the beaker of water is hotter.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.