Chemistry Blog Thing

1)What tasks have you completed recently? The tasks I have completed is me completing the whiteboard/outline for chemical vs. physical and exploring changes in matter lab. 2)What have you learned recently?  What I have learned is to define the difference between physical change/property and chemical change/property. 3)What are you planning on doing next to improve your understanding or reinforce your learning? I plan on writing simple notes to define between the two more better. Example: chem(new) phys(same)

1. What question were you trying to answer and why?  We and our team were trying to find which changes were examples of chemical and which changes were examples of physical. 2. What did you do during your investigation and why did you conduct your investigation in this way? What we did was add salt to water with beakers and using a weight measuring thing to find how much salt we needed. For the copper wire, we used a bunson burner and matches to heat it up. For the baking soda and hydrolic, we used beakers for this too and a dropper. Lastly, for the Sodium Hydroxide and CO2 we used another dropper and beaker. We conducted this way because it was more easier and similar and to get more accurate results. 3: What is your claim, evidence, and reasoning? Claim: For our changes of chemical, they were the copper wire, baking soda/hydrochloric , and the 5 drops of sodium hydroxide/CO2. The changes of physical are Pafferin and Salt/Water. Evidence: Starting with the salt/water; t...

1)What task have you completed recently? I completed Density of Pennies, where you find the mass and volume of two pennies then divide the two to get the density. 2)What have you learned recently? Mostly of measurement and how to communicate info, distinguish accuracy & precision, significant numbers and decimals, express numbers scientific notation and standard form. 3)What are you planning on doing next to improve your understanding or reinforce your learning? I plan on using the Atlantic and Pacific rule to help me find a significant number more better instead of deciding on what actually numbers go and keeping notes.

What question were you trying to answer and why? The question we and our team were trying to answer was 'Do you get what you pay for?' and reason for this was to see if chip companies actually give you the most accurate amount of grams in chips, which to test us on our accuracy and precision in the lab of measurements. What did you do during your investigation and why did you conduct your investigation in this way? During our investigation, we decided to collect mass info about the various bags of chips, which were '28.3 g' . Once having our data measurements of all the chips we have we need to find the accuracy of the chips, this will be our middle number, and will use this to find our net weight which would be to +- 0.10 g . Our precision will be used as using a variance less than or equal to 0.20 g . What is your claim, evidence, and reasoning? Our claim was yes, we get what we were getting what we were pay for. Our reasoning was, Accuracy - the net weight +- 0...