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Hess's Law is named after Swiss-Russian Chemist and Doctor Germain Hess. Hess contributed to formulating the early principles of thermochemistry. His law on thermochemistry was included in his most famous paper, which was published in 1840. According to Hess's Law of Constant Heat Summation (also known as Hess's Law), no matter how many steps are required to produce the desired chemical, the amount of heat involved in producing it from another is always the same. Hess's law signaled the creation of the more comprehensive law of conservation of energy and paved the way for the development of chemical thermodynamics by the American scientist Josiah Willard Gibbs in the late 19th century. To help you obtain a thorough understanding of Hess’s Law, we have provided worksheets for you to have further practice on this important part of your knowledge. Our Hess's Law Worksheets contain a set of practice problems involving Hess's Law, in which students reverse, multiply, or divide reactions to get them to combine into a single equation. These Chemistry worksheets can be finished individually, in small groups, or during teacher-led instruction. Students will have to apply Hess's Law to calculate the heat of reactions as well as answer questions. If you are looking for worksheets to reinforce your comprehension of this particularly important law, you’ve come to the right place. Give our Hesss Law Worksheets a try and take your understanding of Hess’s law to the next level.
