Samantha's Chemistry Blog

    Exploring Atomic Structure & Electromagnetic Radiation The task of our lab was to use a flame test to determine emission line spectrum of seven different solutions. Then, determine the identity of four unknown solutions using a flame test, and the emission line spectra from the seven known solutions.   The steps taken were to first dip wooden splints in each known solution. The order  we dipped them were Calcium, Barium, Copper II, Lithium, Potassium, Sodium and Strontium. We placed the soaked wooden splints into the flame one at a time and observed the color of light emitted. We then recorded the light we observed into a table  beside its solution. Afterward, each group was given 4 splints with unknown solutions. Repeat the previous steps to determine the color each unknown solution gives off and compare which its most similar to compared to the known solutions.  Ion Name (Flame Color): Calcium (dark orange), Barium (greenish yellow), Copper II (turquoise green), Lith

3 Question Blog #2 1. Tasks I've completed recently are a lab related to the changes in matter, a lab related to the differences in a physical and chemical change and flipped notes 2. Recently I have learned the difference between chemical and physical properties, along with chemical and physical changes. 3.  To improve my understanding I will ask with questions, take time outside of class to go over my flipped notes, and specifically study what different properties are in Chemical and Physical changes.

3 Question Blog #3 I have done extensive practice on isotopes and atoms in PHET simulators to experiment how theyre balanced and changed. I have researched to better understand how electrons change charge. I have learned about the elements found in the periodic table, what is found in an atoms nucleus, how to find the number of neutrons in an isotope, and how to calculate mass. I will watch more videos online on how to find the number of electrons in an isotope and its charge. Then I will attempt to solve these problems on my own to see my improvement.  

Isotopic Abundance Lab The task for this lab was to find the atomic mass of beanium. Each group received 4 different groups of beans. In this case the beans represented the different Atom. We first had to count the number of of each atom in its group and measure its total mass. We then calculated the percent of population by dibided the number of beans by the total. Then we calculated the average mass by dividing the total mass by number of beans. Lastly, to find the Atomic mass we multiplied each isotopes average mass by the percent of population and added the product to the other isotopes. My groups overall atomic mass came out to be .45g.  Evidence  : Limium|Mass: 7.1 g/ Avg= 1.42 g ( 5 beans) 10% Kidneyum|Mass: 8.5 g/ Avg= 0.53 g ( 15 beans) 30% Peagen: Mass: 7.1 g/ Avg= 0.24 g (30 beans) 60%          (1.42g)(10%)+(0.53g)(30%)+(0.24)(60%)/100= 0.4 g