Making Proper Graph: ➢ Line Graph: ○ Best used to track and display trends or changes over time. (numbers to numbers). ➢ Pie Charts: ○ Used to compare parts to a whole. Percentages are compared in pie charts. ➢ Bar Graphs: ○ Best used to compare data that is between different parties or groups. (category with numbers) ➢ Scatter Plots: ○ Used to determine if a relation or relationship belongs to different things. Are they following a trend? Usually small SD since data and plotted points are close to each other. ➢ Finding Rate: → → ➢ Interpreting Error Bars: ○ If the data is a normally distributed bell curve, 95% of the data between 2 SEM. This “Window Of Data” is known as a 95% confidence interval. These values are plotted on the graph to help illustrate the range of data in a sample. Multiply SEM by +2 and -2. ➢ Other Tips: ○ When scaling, make sure your numbers or categories spread out to at least half of your graph. ○ LABEL YOUR X AND Y AXIS’ (Independent Variable -part that changes- placed on the x axis and vice versa) ○ TITLE (Something VS Something). Properties Of Water: ➢ Chemistry of Water involved in each property: ○ Polar covalent bonds: Since oxygen is more electronegative than hydrogen, the electrons of the covalent bonds spend more time closer to oxygen than to hydrogen. ○ Polar molecule: overall charge is evenly distributed. The unequal sharing of electrons and waters V-Like shape make it a polar molecule. ○ Hydrogen Bonds: The properties of water arise from attractions between oppositely charged atoms of different water molecules. Slightly positive hydrogen of one molecule is attracted to the slightly negative oxygen of another hydrogen.
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- Fall '16
- Atom, OH, ester bond