Chemistry Blog Thing

1)The question we  were trying to answer was the # of things around central atom affect the shape of a molecule. 2)What we did for our investigation was use a VSEPR (valence shell electron pair replusion) simulation. We did this to predict the shape of a molecule from the # of atoms and lone electron pairs around central atom. 3)Our claim was when more things were added, the central atom appeared smaller. Our evidence was this, (it's the picture of our molecules with their angles and if they had a sing,doubl,tripl and lone pair bond. My reasoning was that model allows us to use the e- dot structures of atoms to predict the 3D Geometry of simple molecules. It was determined by the # of things surrounding a central atom. Also for lone pairs, lone pairs didn't really change the shape but change the electron name of the molecule.

1)The question we were trying to answer if  reactivity is a periodic property . 2)What we did for our investigation is we got certain elements and put them in regular water to see the reaction. Since water is very simple, it made sense to put the elements in it to watch the results. 3)My claim was 'Yes, reactivity is a periodic property.' My evidence was what the element was, and what we matched what happend when it touched the water. (Highest Reactivity to Low) ----Potassium | It generated a pink flame and fizzed and moved around. ----Sodium | Fizzed and spinned around. ----Calcium | Bubbled and fizzed. ----Magnesium | Nothing when in water and turned pink when heated. ----Copper | Nothing even when heated My reasoning was 'Potassium was more reactive than Sodium, because Potassium caught on fire and Sodium did not. Then Calcium didn't moved around but fizzed like Sodium. Then Magnesium had nothing to do with the water by itself intill put in heat, and Copper ...

1)The tasks I have completed were finding if reactivity of an element shows a periodic property. 2)I have learned how to find a certain element from its groups, column, and families. 3)I plan on noting it better so I can find the valance and groups and such much faster. In a way I can remember better.

1) The tasks I have completed recently is doing electron configurations and orbital diagrams and learning about them. 2) I have learned that a easy way of finding the orbital diagram for a element is to look at it's row, block, and column. Getting it's final electrons and then filling in the rest before it. 3) I plan on making notes and keeping track of the 3 main rules (aufbau, pauli, hund) laws for electron configuration and what they are to get a better understanding.

a) The question we're trying to answer was to identify electrons in energy excited stage, while finding certain common metals and identifying unknown ones with a fire test. b)What we did during our investigation was get coated toothpicks that had a coating of the certain metal and put it through a lit bunson burner to find out the color it was giving, the reason we were doing it like this was to identify the metals beforehand, then try and identify the unknown ones by matching the certain color shades. c)My claim was that the first one we did (unknown 1) was sodium the second one (unknown 2) is barium, the third one (unknown 3) strontium and last (unknown 4) was potassium. For my evidence I made a list on paper that showed the substances (copper.etc) matched with the color given on paper. For bold is substance and color is normal font. Calcium - dark orange Burium - yellow green Lithium - red Potassium - peach Sodium - sunset orange strongium - orange red uk(unknown) 1 -...

1) The tasks I have completed recently is of identifying isotopes and identifying atomic mass. 2) I have learned that  isotopes usually make the mass number of element and that it's protons and neutrons together. 3)I plan on remembering it more better and remembering also how to find two isotopes and there abundances to get there atomic mass.

a) What question were you trying to answer and why? The question we were answering is was 'What is the atomic mass of beanium?'. Since beanium was recently discovered element and to practice finding the atomic number and finding the mass and percentage. b) What did you do during your investigation and why did you conduct your investigation in this way? What I did during the investigation was finding the mass of each different type of bean and there percentage. We conducted this way because, it'll help us add all the beans up and than do the atomic # formula. c) What is your claim, evidence, and reasoning? Our claim was to justify the atomic mass of beanium. The evidence was our data table of the numbers and percentages we got. Our reasoning was, we had found the visulization of each bean and their clarification in order to find the atomic mass.  The Evidence Data Download