What is happening in this diagram? 4 iterations of the following structure: 2 carbons double bonded to each other, each bonded to H above, the left C bonded to H below and the right to R below. The chain begins with an I and a dot. A curved arrow points from the dot to the space before the first structure above; curved arrows point left and right from the double bonds to the spaces before and after the structures. Arrow points to a long chain of carbons, I at the beginning of the chain. The carbons are all bonded to H above, and alternate bonding to H and R below. Polymers are forming large monomers. Monomers are forming large polymers. Polymers are breaking down into monomers. Monomers are breaking down into polymers.

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.

98 points you will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. before you conduct your experiment, you need to form a hypothesis. a hypothesis is a prediction of what you think will happen in the experiment. the hypothesis is a statement that describes “if” a certain set of circumstances are present “then” there will be a specific result that will occur. record your hypothesis here: record the results from step one of the experiment (dropping the objects in the air): first trial: second trial: third trial: record the results from step two of the experiment (dropping the objects in a vacuum): first trial: second trial: third trial: did the experiment support your hypothesis? using the data from your experiment, describe why you believe your hypothesis was either proven or disproven. what forces were acting on the objects dropped in the air? what force was acting on the objects dropped in the vacuum? part two: comparing forces choose two forces and compare and contrast these forces. you must provide two ways that they are alike and two ways that they are different. you may make a list, write in paragraph form, or make a chart. choose two forces and compare and contrast these forces. these must be different forces than used in the prior question. provide two ways that they are similar and two ways that they are different. you may make a list, write it out, or make a chart.