Answer the following question given this paragraph: Chemical Reactions and Molecules All elements are most stable when their outermost shell is filled with electrons according to the octet rule. This is because it is energetically favorable for atoms to be in that configuration and it makes them stable. However, since not all elements have enough electrons to fill their outermost shells, atoms form chemical bonds with other atoms thereby obtaining the electrons they need to attain a stable electron configuration. When two or more atoms chemically bond with each other, the resultant chemical structure is a molecule. The familiar water molecule, H2O, consists of two hydrogen atoms and one oxygen atom; these bond together to form water, as illustrated in Figure 2.9. Atoms can form molecules by donating, accepting, or sharing electrons to fill their outer shells. Q: All elements are most stable when their outermost shell is filled with electrons according to which rule? Choices: - quartet rule - string rule - coupling rule - octet rule A:
octet rule
(Question)
Answer the following question given this paragraph: Deep currents are convection currents that occur far below the surface. They are caused by differences in the density of ocean water. Q: What are convection currents that occur far below the surface of the ocean called? Choices: - subsequent currents - waves - flat currents - deep currents A:
(Answer)
deep currents
Ques: Answer the following question given this paragraph: Latitude is the distance north or south of the equator. It's measured in degrees, from 0 to 90. Several climate factors vary with latitude. Q: What is the distance north or south of the equator called? Choices: - inclination - longitude - Prime Meridian - latitude A:
Ans: latitude
(Q).
Answer the following question given this paragraph: Some of Earth's freshwater is found in wetlands. A wetland is an area that is covered with water, or at least has very soggy soil, during all or part of the year. Certain species of plants thrive in wetlands, and they are rich ecosystems. Freshwater wetlands are usually found at the edges of streams, rivers, ponds, or lakes. Wetlands can also be found at the edges of seas. Q: What do you call an area covered with water, or possessing very soggy soil, all or part of the year? Choices: - stream - peninsula - island - wetland A:
(A).
wetland
Ques:Answer the following question given this paragraph: A ketone involves a carbonyl in which the carbon atom makes single bonds with two other carbon atoms. Ketones undergo most of the same reactions as aldehydes, but they tend to be slightly less reactive. The simplest ketone is acetone, in which the carbonyl carbon is bonded to two CH 3 groups. This ketone is commonly used to remove fingernail polish and serves as an industrial solvent. Methyl ethyl ketone is used as a paint stripper and a solvent. Ketones are also used in the production of various polymers, either as a building block or as a solvent. Q: Acetone is the simplest type of what organic compound that involves a carbonyl in which the carbon atom makes single bonds with two other carbon atoms? Choices: - enzyme - protein - anion - ketone A:

Ans:ketone
Answer the following question given this paragraph: Electronic components are the parts used in electronic devices such as computers. Types of electronic components include diodes, transistors, and integrated circuits. Q: What are the parts used in electronic devices such as computers called? Choices: - batteries - digital components - chargers - electronic components A:
electronic components