3 Questions

1. What tasks have you completed recently? 
2. What have you learned recently?
3. What are you planning on doing next

• I finally got my double turn again in pom. Lately I've been struggling getting solid turns down, and what do you know, enough sleep before practice did the trick!  
• I have recently learned that I  have to go to the doctor next month again for yet, another checkup.. YAY......
• I plan on finishing all of my work for all my classes, turn them in and try not to fall behind for the rest of the semester.

My new wallpaper, 100% daddy approved.

Accuracy and Precision in the Food Industry

 

Exploration Objective

• Were the bags of chips accurate? Were the bags of chips precise? (Provide evidence from the lab.)
• Do you get what you pay for?  Explain.
• Why did you have to measure to two decimal places?
• Would one decimal place have been better?  Or three decimal places?  (i.e., Would either have impacted the precision or accuracy of your bags of chips?)
• What's the difference between precision and accuracy?

-  No the bag of chips were not accurate nor precise.

BAG #	GROSS WEIGHT	TARE WEIGHT	NET WEIGHT
1	31.85	2.33	29.52
2	30.90	2.24	28.66
3	30.86	2.29	28.57
4	30.43	2.33	28.1

-No because each bag had a different net weight.
-You have to measure to two decimal places to be more precise.
-Accuracy is the difference between the measurements, and precision is how close the measurements are.

 

3 Questions

What tasks have you accomplished?

I  can finally not throw up everything I eat after TWO WEEKS of being sick! YAY! I love food, especially when it doesn't come back up... I finally went to the gym and worked out, it helps reduce my stress tremendously, and I defiantly need a stress reliever. I finally had the time to learn all my lines from theatre which I did in about twenty minutes on Friday when I was suppose to have them memorized on Monday, but life happens.

What have you learned recently?
I have learned about wavelengths,  energy, and frequency, and how to find them.  I learned that water is the most essential and crucial nutrient for humans, I knew it was essential for overall health but I didn't know what a huge role it plays in the human body, its the major component of our blood. I also learned that I'm just one person and I cannot do everything humanly possible...

What do you plan on doing next?
I'm still in the process of finishing all of my homework for chemistry, trigonometry, and my personal health and wellness class at NMSU, my goal is to finish it all by tonight. I plan to study for the ACT EVRYDAY, which is on the same day of Theatre's state competition. I also plan to work on my solo musical piece for theatre as much as possible and place at state this year, and work on my college audition pieces as well; my goodness there's so much to do this month! Most importantly watch my health its the most important thing to worry about I can't do everything I need to do if my health is not good. Here's how I plan to deal with stress

(Just kidding!)

 

Just because.....

 

Flame Test Lab

*Can you distinguish between elements?  How?  (i.e., What observations did you make?  What are your results?)
You can distinguish between elements because each element had a different flame color.

Results
Element:          Li             Na            K            Ca                Sr        Ba            Cu
 Color:         Hot Pink      Orange    Purple     Red/orange   Red      Yellow     Green


*Could you identify the unknown?  What was it?  How do you know?
The unknown flame could be identified because of it's color not two elements had the same color. Unknown #1 was Li because of its hot pink flame; Unknown #2 was K because of its purple flame.

 

 

 

*Watch this YouTube video of cesium's flame test.  Based on what you observed, can cesium's flame be a different color?  Why or why not?

Based on the YouTube video, no cesium's flame color cannot be a different color, because each element has its own color to distinguish it from others, it will always be a blue-violet flame, just as potassium will always be a violet flame, Lithium will always be hot pink, etc.

 

*In terms of the law of conservation of energy, what exactly is gaining energy and what is losing energy?

When the element touched the flame it gained energy by absorbing it, then the energy gained is released which produces photons.

 

 *Why do elements produce colored flames?

Because each photon has a different amount of energy, the different amounts of energy are what causes the different colors of flames.

 

 

 

Cu

 

 

Ca

 

Li

 

 

 

Radioactivity Research Project

  

 Is Iodine-131 Therapy a safe therapy for  thyroid disease?

There have been many concerns and questions about whether iodine-131 therapy is a safe treatment for thyroid disease.  

Here are the answers to concerns and question about iodine-131.

Is iodine-131 therapy a safe treatment and what are the side effects?

* Yes iodine-131 therapy is a safe treatment, it is used to destroy part of the thyroid gland so the remainder of the thyroid can function normally. When going through the therapy for an overactive thyroid gland the patient will not feel any side effects, but following the theory after the removal of the thyroid due to cancer some might experience dry mouth and pain in salivary glands.

What type of decay is going on?

 *The type of decay that's going on is beta decay.

What is the half-life, and how long will it take for 99% to disappear?
 *The has a half life of 8 days, it will take 3 half life's for 99% of it to disappear.

 How can we protect humans from this type of isotope when we don't want to be exposed to it?
* To protect humans form iodine-131, by being cautious of what how much of we consume, when taking medication with liquid  iodine which is used to diagnose and treat cancers of the thyroid gland can cause burns to the eyes and skin if too much is taken.
Why is radioactivity all around us?   Is it natural and what does that mean?
*Radioactivity is all around us because it comes most comes from natural sources around our everyday life's such as the ground, the air, building materials, food, and cosmic rays from space. It's natural to have radioactivity all around us, what it means is, though being around too much radiation can cause health effects and other problems, we can live life normally without being paranoid about radioactivity because its all around us.


Sources:

http://www.bt.cdc.gov/radiation/isotopes/iodine.asp

http://www.bt.cdc.gov/radiation/isotopes/iodine.asp

http://www.epa.gov/radiation/radionuclides/iodine.html

http://www.bbc.co.uk/schools/gcsebitesize/science/add_edexcel/radioactive_materials/radioactiveusesrev2.shtml

http://www.insideradiology.com.au/pages/view.php?T_id=44#.VBj-TBstDIV

http://www.ncbi.nlm.nih.gov/pubmed/20380134

 

The Bean Lab

Exploration Objectives

• What is a 'pot' of beans? A 'pot' of beans is the relative mass of each different bean.  
• Why is relative mass used to determine the number of beans in a pot? Relative mass is used to determine the number of beans in a pot because the relative mass is used to create a ratio. We used the lightest bean to create a ratio for all the beans.
• Why is this 'pot' a model for the mole? This 'pot' is a model for the mole because its a constant number.
• What relative mass is used for the mole?  Why? Carbon-12 is what's used for the mole because, the mass is 12 with 6 protons, which makes it an even ratio because it also has 6 electrons.

 

Skital Decay

What type of graph is created by your data? The graph is a scatter plot graph.
 What are the similarities and differences between the class average and your average? The similarities are the points for my average and the classes were very close to each other. The points almost touch especially the first three points.
 The differences between the two is the class average took more tosses than my data.
What is the half-life of skittles? The half-life of skittles is how many skittles are how many radioactive nuclei are left after each toss.
What is the linear relationship between the number of tosses and radioactive nuclei? The linear relationship is every for every toss the radioactive shrunk down to about half each time. 

3 Questions

1. What tasks have you completed recently? The tasks that I have completed recently are doing various experiments where I needed to observe and learn what causes chemical and physical changes.

2. What have you learned recently? I've recently learned about matter classification, where I can identify the differences  between types of matter, and  know the different types of methods of mixture separation.

3. What are you planning on doing next? What I plan on doing next for myself is to fully understand matter classification, being able to know the information straight from my head instead of checking for my notes so often.

Differentiating White Powders

Differentiating White Powders
Exploration Questions 

 

• Could you distinguish the powders just by looking at them? -No you cannot distinguish the powders just by looking at them.   
• What did you observe when you added the different liquids to each powder?  (i.e., what were your results?)

 

 

 

• If you were given one of the powders, as an unknown, could you identify it?  How?  Why?- If one of the powders were given as unknown I would be able to identify it, by observing how the given unknown powder reacts with the potassium. Using the potassium would be the best liquid to use first because each powders color reacted differently with the potassium. If the powder turns yellow then the powder is obviously baking soda because baking soda was the only powder that turned yellow. If the powder turns grey then brown it could either be baking powder or corn starch, to figure out which of the two the unknown powder is I would use either water or vinegar to distinguish it; if the powder bubbles and fizzes it is baking powder, if it doesn't then its corn starch.

 

 

 

 

 

 

 

Reaction In a Bag Lab

Exploration Questions

• Could you distinguish the powders by just looking at them? Yes by looking at the textures they have one is powdery and the other is sugar like.
• What did you observe when you added the different liquids together? When adding the phenol red to the baking soda the color was blood red, when it was mixed with the calcium chloride it was a dark red orange color. When the powders were mixed with the water the colors for both liquids were clear. I found that phenol red had no impact on the temperatures of the liquids. When phenol red or water was mixed with calcium chloride the liquid was warm; when P.R or water was mixed with the baking soda the liquid was cold. At the end of the experiment I noticed that when all three ingredients were mixed together it was the only one that turned into a orange/yellow color, and that it wasn't just a liquid substance it had bubbled and looked foam like; when just mixing two ingredients at a time it instantly turned into a liquid substance there was no bubbling/foam.
• If you were given one of the powders as an unknown could you identify it? If the powders were given as unknown I would be able to identify it, by looking at the characteristics of the two. The calcium chloride is sugar like with many small crystals, the sodium bicarbonate is powdery and fluffy looking.

CONCLUSION
In conclusion I have found that phenol red had no impact over the calcium chloride or the sodium bicarbonate because using water in place of the phenol red had the same impact on the powders. When all three ingredients were mixed together the color was different than all the others the others were either red or clear, and it wasn't a liquid it turned more like foam. But  the unanswered question that is lingering around waiting for an answer is why did it turn ORANGE/YELLOW?!?!?!?!!

Bouncy Balls Experiement

 

 

-The best proportion of the experiment were 1.5 ml of borax solution, with 12.7 grams of glue.
-The proportions of sodium borate and glue matter because the amount of them effect each other. You can use the same amount of glue but different amount of solution each time (or the other way around), the results of texture and how long the ball takes shape varies, the results are never the same, unless you use the same proportions each time.

-I determined the best proportions by changing one variable first which was the amount of glue, observing more or less glue impacted the bounce and shape of the ball. After I saw that testing different amounts of glue I saw that less is more, less had a greater shape and bounce. After I used the same amount of glue that made the ball better I changed the amount of solution to determine if less or more solution had more significance over another. My method is important because it's important when looking for a cause and effect in an experiment to keep track of the different changes of variables and how they impact the ball. Also to determine what can be done to improve.