Ques:Answer the following question given this paragraph: Nuclear energy is produced by carefully controlling the speed of a fission reaction. Q: Carefully controlling the speed of a fission reaction produces what kind of energy? Choices: - chemical - atomic - thermal - nuclear A:

Ans:nuclear
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Ques:Answer the following question given this paragraph: Amino acid units in a protein are connected by peptide bonds. What is another name for the functional group linking the amino acids?. Q: Amino acid units in a protein are connected by what bonds? Choices: - acidic - covalent - ionic - peptide A:

Ans:peptide
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Ques:Answer the following question given this paragraph: Chemists often need to know what elements are present in a compound and in what percentage. The percent composition is the percent by mass of each element in a compound. It is calculated in a similar way that we just indicated for the peanut butter. Q: What term means the percent by mass of each element in a compound? Choices: - molecular composition - calculated composition - mass composition - percent composition A:

Ans:percent composition
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Ques:Answer the following question given this paragraph: Chemical reactions follow the laws of thermodynamics. The First Law of Thermodynamics states that energy can be changed from one form to another, but it cannot be created or destroyed. This law is also known as the Law of Conservation of Energy. The Second Law of Thermodynamics states the energy available after a chemical reaction is always less than that at the beginning of a reaction. This is also commonly referred to as entropy. Entropy can be described as the degree of disorder in a system . That is, as energy is transferred from one form to another, some of the energy is lost as heat, and the amount of available energy decreases. As the energy decreases, the disorder in the system increases, and, by definition, the entropy increases. Ice melting provides an example in which entropy increases. Entropy essentially is a measure of the tendency of a process, such as a chemical reaction, to proceed in a particular direction. Q: Chemical reactions follow which laws? Choices: - Physics Analysis - Chemical kinetics - Archie's law - thermodynamics A:

Ans:
thermodynamics
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