Q: Q: What is the name of a branch of the chemistry that deals with the interconversion of chemical energy and electrical energy? Read this paragraph and choose the correct option from the provided answers: Chemical reactions either absorb or release energy, which can be in the form of electricity. Electrochemistry is a branch of chemistry that deals with the interconversion of chemical energy and electrical energy. Electrochemistry has many common applications in everyday life. All sorts of batteries, from those used to power a flashlight to a calculator to an automobile, rely on chemical reactions to generate electricity. Electricity is used to plate objects with decorative metals like gold or chromium. Electrochemistry is important in the transmission of nerve impulses in biological systems. Redox chemistry, the transfer of electrons, is behind all electrochemical processes. Choices: - Inorganic chemistry - Biochemistry - Theoretical Chemistry - electrochemistry A:
A: electrochemistry

Q: Q: A binary molecular compound is made up of two of what? Read this paragraph and choose the correct option from the provided answers: A binary molecular compound is a molecular compound that is composed of two elements. The elements that combine to form binary molecular compounds are both nonmetal atoms. This contrasts with ionic compounds, which were formed from a metal ion and a nonmetal ion. Therefore, binary molecular compounds are different because ionic charges cannot be used to name them or to write their formulas. Another difference is that two nonmetal atoms will frequently combine with one another in a variety of ratios. Consider the elements nitrogen and oxygen. They combine to make several compounds including NO, NO 2 , and N 2 O. They all can't be called nitrogen oxide. How would someone know which one you were talking about? Each of the three compounds has very different properties and reactivity. A system to distinguish between compounds such as these is necessary. Choices: - compounds - cells - wafers - elements A:
A: elements

Q: Q: Some materials have negative heats of solution; the dissolution of one of these solutes in water is called? Read this paragraph and choose the correct option from the provided answers: Some materials have negative heats of solution; the dissolution of one of these solutes in water is an exothermic process. Heat is released, causing a net increase in the temperature of the solution. Conversely, other substances have positive heats of solution. For example, the dissolution of potassium nitrate in water is an endothermic process. The resulting absorption of energy causes the solution to become colder. Calculations involving heats of solutions follow the same basic approach that we have used with other enthalpy problems. Choices: - endothermic process - acetylene process - ionized process - exothermic process A:
A: exothermic process

Q: Q: Chemical reactions that consume energy are called what? Read this paragraph and choose the correct option from the provided answers: Chemical reactions that consume energy are called endothermic reactions . Energy is usually absorbed from the surroundings as heat. An example is the synthesis of ammonia, described above. In organisms, endothermic reactions are called anabolic reactions . Anabolic reactions construct molecules from smaller units. An example is the synthesis of proteins from amino acids. Endothermic reactions can be represented by the general chemical equation:. Choices: - exothermic reactions - inefficient reactions - greedy reactions - endothermic reactions A:
A: endothermic reactions