Europeans vs the Native Americans essays

Europeans vs the Native Americans essays 1) Discuss the clash of cultures between the European and the Native Americans. What were the similarities and what were the differences? The Native Americans outnumbered the colonists so why didnt they drive the Europeans from the Atlantic coastline. Any general lessons to be drawn? The pre-Columbian Indian civilizations consisted of the Mayas, Toltecs, Astecs, Incas, and other Indians. Remnants of stone choppers and scrapers that were discovered suggest that the Indians used these items for spears and arrows. (Tindall, pg. 7) The Indians were not domesticated, they used their hunting skills to kill their prey and bring it home to their families. As the Indians began to settle in more permanent or semi permanent villages, they began to invent more domesticated items such as fiber snares, basketry, mills for grounding nuts, and domesticated the dog and turkey. (Tindall, pg. 7) The Indians began to consume more plant foods that became the staples of the New World: chiefly maize, which is Indian corn, squash, chili peppers, avocados, and pumpkins. (Tindall, pg. 7) Present day America should give credit to the Native Americans for harvesting these foods, because these foods are in our diets. Long before Columbus arrived, America lived in the fantasies o f Europeans. (Tindall, pg. 13) When the Europeans arrived, they encountered a land of many opportunities, some in which they had to swipe out from under the Native Americans feet. The first European contacts with the New World began a diffusion of cultures, an exchange of severe magnitude and race, as humanity had never known before. (Tindall, pg. 21) The Europeans were introduced to animals and creatures that they had never seen before. The only domesticated animals that the Europeans recognized were the dog and the duck. (Tindall, pg. 22) On the other hand, the Native Americans had never seen horses, cattle, sheep, goats, or chickens. The diversion of plants ...

Lewis Structure Example Problem - Formaldehyde

Lewis Structure Example Problem - Formaldehyde Lewis dot structures are used to predict the geometry of a molecule. You will be able to draw a Lewis structure of the formaldehyde molecule after using this equation. Question Formaldehyde is a toxic organic molecule with molecular formula CH2O. Draw the Lewis structure of formaldehyde. Step 1 Find the total number of valence electrons. Carbon has 4 valence electronsHydrogen has 1 valence electronsOxygen has 6 valence electronsTotal valence electrons 1 carbon (4) 2 hydrogen (2 x 1) 1 oxygen (6)Total valence electrons 12 Step 2 Find the number of electrons needed to make the atoms happyCarbon needs 8 valence electronsHydrogen needs 2 valence electronsOxygen needs 8 valence electronsTotal valence electrons to be happy 1 carbon (8) 2 hydrogen (2 x 2) 1 oxygen (8)Total valence electrons to be happy 20 Step 3 Determine the number of bonds in the molecule.number of bonds (Step 2 - Step 1)/2number of bonds (20 - 12)/2number of bonds 8/2number of bonds 4 Step 4​ Choose a central atom.Hydrogen is the least electronegative of the elements, but hydrogen is rarely the central atom in a molecule. The next lowest electronegative atom is carbon.   Step 5: ​ Draw a skeletal structure. Connect the other three atoms to the central carbon atoms. Since there are 4 bonds in the molecule, one of the three atoms will bond with a double bond. Oxygen is the only choice in this case since hydrogen only has one electron to share. Step 6: ​ Place electrons around outside atoms.There are 12 valence atoms total. Eight of these electrons are tied up in bonds. The remaining four complete the octet around the oxygen atom.Each atom in the molecule has a complete outer shell full of electrons. There are no electrons left over and the structure is complete. The finished structure appears in the picture at the beginning of the example.