BSC2010ch2.pdf - Giselle Godt\u2028 BSC 2010 190400 Ch 2 Concept Check 2.1.1 Table salt is made up of sodium and chlorine Since we are able to eat the

BSC2010ch2.pdf - Giselle Godt
 BSC 2010 190400 Ch 2...

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Giselle Godt BSC 2010 190400 Ch 2 Concept Check 2.1.1 Table salt is made up of sodium and chlorine. Since we are able to eat the compound, it shows that it has different properties from those of a metal and a poisonous gas . 2.1.2 Yes, trace elements are essential elements because an organism requires them even if they’re only in small amounts. 2.1.3 A person with an iron deficiency will probably show fatigue and other effects of a low oxygen level in the blood. They also will crave chewing ice often, usually pale, and experience headaches. 2.1.4 A variation of plants that could tolerate the elevated levels of the elements in serpentine soils could grow and also reproduce in that type of soil. The offspring of the plants would also vary, with the ones that can grow best in the serpentine soil conditions reproducing the most. This probably led to the serpentine-adapted species we see today in plants, because of the offspring producing over many years and generations. 2.2.1 Mass number of lithium is 7.
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Unformatted text preview: 2.2.2 15/7 N 2.2.3 Flourine has 9 electrons.1 electron is needed to fill the valence shell since the electron configuration is 1s^2, 2s^22, 2p^5 2.2.4 The elements in a row all have the same number of electron shells. In the columns, all the elements have the same number of electrons in their valence shells. 2.3.1 Each carbon atom has only three covalent bonds instead of four. 2.3.2 The atoms are held together by ionic bonds, which are formed by the attraction of oppositely charged ions. 2.3.3 Learning the shapes would be helpful because if you could synthesize molecules that mimic these shapes, you might be able to treat diseases or conditions caused by how the affected individuals aren’t able to synthesize the same molecules. 2.4.3 C6H12O6 + 6O2 --> 6CO2 + 6H2O + ATP. Glucose and oxygen react to form carbon dioxide and water that releases energy. Since we breathe in oxygen, we need it for this reaction to occur and since we breathe out carbon dioxide, it is a product of this reaction...
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