Chocolatium

[Ráhel Sárközi]

Calling:
Athena Achilles
Cara-Jean Kitchi
@running9
Danielle A. St George
@fitzwilliam
Jacey Taylor Davison
Martijn van der Berg
@ronan
Stefano Rice

Ráhel glanced around the chemistry lab, nodding slightly. Half of the room was done up with lab benches facing a whiteboard, while the other half was set up with rows of tablet desks, which faced the front of the room (also where the door was) and another whiteboard. However, today they were going to use the back half of the classroom. It had already been set up with nametags and covered bowls, which the students would be working with today.

As students entered, Ráhel nodded to each and pointed them towards the benches, "Please find your name and grab a stool at that table. Please do not touch any materials on the tables." Otherwise their numbers might skew from what she'd ended up with... Especially if the students had a sweet tooth, because the chocolate candies might prove too tempting.

Finally, when the last bell had rung, Ráhel walked up to the front of the classroom, "Okay, everyone. Welcome to Chemistry, I'm Ms. Sárközi, if you have trouble, it's on the board, but please learn to spell it." The corner of the board dedicated to this use also had a mini pronunciation guide, necessary if she didn't want her last name butchered.

"Today we will be exploring the concept of average atomic masses. Basic laboratory rules apply, don't put anyone at risk, including yourself. Don't go off on your own experiments. Easy enough. Now, on the table, you'll find a worksheet for each group to fill out, which requires you to use the bowl in front of you. Please fill it out as a group, you are welcome to use your phones as calculators if you don't have a calculator with you. In the future, you will need one. Please don't eat the materials!" With a small smile, she moved to sit on her desk, facing the students so that she was ready should anyone have a problem.

Back Left Empty	Back Right Empty
Jacey Taylor Davison Ronan McAleese {Bowl}	Athena Achilles Martijn van der Berg {Bowl}
Stefano Rice Fitz Westworth Chase Rivers {Bowl}	Cara-Jean Kitchi Danielle St George {Bowl}

Isotope	Number Found (NF)	Total Number (T)	Natural Abundance (NF÷T)
Brown	_______	_______	_______
Red	_______	_______	_______
Green	_______	_______	_______
Yellow	_______	_______	_______
Orange	_______	_______	_______

"What does it mean when it says total number? Wouldn't that be the same as number found?"
Total number is the number of all colors together (total count). Number found is only the listed color.

[Athena Achilles]

Athena made her way from one class to the next, exchanging words with other students as she walked, but there was nothing that seemed to deter her from the path she was on, and it didn't take log to get to the chemistry lab.

She smiled toward the teacher as she entered and nodded her head to show that she understood the instructions and walking toward the benches, she quickly located her name on the right middle bench and she hopped up into the stool on the wall side and waited for her lab partner to arrive - and hoped that he wasn't disappointed to be lumped with her (though that would be his problem).

Her attention was on the teacher when the class began and she smiled as she pulled a face as she read the woman's name, knowing that it wasn't going to be an easy task to remember how to write, let alone pronounce, but she would solider on.

When the topic turned to the lesson at hand, she turned her attention to the bowl on the table and pursed her lips when she saw the chocolates, and laughed when they were asked not to eat the materials. When Ms. Sárközi fell silent, she turned her attention to her lab partner. "Do alternate colours and whomever gets their two colours finished first gets to count the orange?" She suggested.

[Cara-Jean Kitchi]

On her way from one classroom to the next, Cara quickly stopped into the girls' toilet and checked that her make-up was still in place. Yes, not exactly a Cara thing to do, but her make-up was to deceive the eyes of others not to make herself look more attractive to the opposite gender, and rather than amplifying her features, it looked so natural that one would be hard to see that she was actually wearing it - unless they walked in on her at this point that is.

Entering the chemistry lab, she bowed her head at the greeting and instructions and made her way toward the benches. Finding her name at the bench in front of the one another girl was sitting at, she sat down and removed her folder, pencil tin and glasses case from her bag. Once the glasses were in place and she had her half of the bench set to her standards, she looked at the bowl on the desk and one side of her nose lifted in distaste before she turned her complete attention to the woman at the front of the room.

When it was time to get down to work, Cara remained quiet, allowing her lab partner to take control as she was much more content to follow orders than make suggestions.

[Stefano Rice]

Seth made his way between classes and walked into the chemistry lab. "Sure thing." He said in reply to the instructions and he strolled over to the benches where he already saw two girls sitting at separate benches. It didn't take him long to find his bench at the front of the room and arched an eyebrow when he saw that he was sharing it with two others.

Sitting down, he rested his elbows on the bench and waited for things to get started, that is until his attention was caught by the bowl on the desk and he looked at the teacher, wondering if she'd notice if one went missing. Ignoring the urge to pop one in his mouth, he listened as their work was explained and he looked at the form on the bench. He frowned as he looked at each of the columns. "Ms Sárközi?" He said as he lifted his hand. "What does it mean when it says total number? Wouldn't that be the same as number found?" He knew that he could be a little blonde at times, but he wanted to make sure that what he thought that answer was - to walk around the room and tally the numbers of the other groups - was the actual answer.

[Martijn van der Berg]

Tijn yawned as he got up, carefully hiding the motion with a hand. His class hadn't been that boring, it'd just been an early morning! He wound his way towards the chemistry lab and nodded as he heard the teacher's instructions. He spotted Cara and nodded to her, before he found his name on the table behind her. He smiled at the girl whom he was partnered with, recognizing her from a few classes, although he didn't think they'd talked much previously.

He sat through the information that they were given, pulling out his notebook to jot down the woman's name and the pronunciation on the board before he slipped it back into his backpack and traded it for his calculator. As Athena offered a way of tackling the worksheet they'd been given, Tijn nodded, "Sounds good to me. I'll do red and yellow." That would leave the girl the first one on the paper, fitting enough since she'd been the first to get there. He paused to listen to another student's question, glancing down at the sheet and nodding as he heard the response. That made sense.

Ready to begin, he carefully dumped the chocolates onto the bench, sorting them deftly into piles by color before pushing Athena's to her, "We can just get the total when all of them have been counted." With that, he started counting, jotting down the number for each before he started on the oranges.

Isotope	Number Found (NF)	Total Number (T)	Natural Abundance (NF÷T)
Brown	_______	_______	_______
Red	___5___	_______	_______
Green	_______	_______	_______
Yellow	__10___	_______	_______
Orange	___6___	_______	_______

[Ráhel Sárközi]

Calling:
@running9
Danielle A. St George
@fitzwilliam
Jacey Taylor Davison
@ronan

Ráhel watched from her desk as the students started discussing the way they wanted to split up the work. As one of the boys, Stefano if she remembered whom she'd assigned to that bench, raised his hand, she rose again, nodding as she listened to his question, "That's a good question. Number found is for the specific color that's listed, the brown, green, whatever. Total number refers to the number of total specimens that you find in your bowl, in effect, the total of all of the colors. In the real world, that would be the entire amount of molecules you find in your sample, here, it's whatever you have in your bowl."

Staying standing for the time being, Ráhel walked through the benches, watching as the students worked with a nod here or there. When most of them seemed to have counted up their rows, she returned to her board, drawing a large grid and then dividing it similarly to the worksheet the students had, although she was already able to fill in the total column. Putting the whiteboard marker down, Ráhel turned back to the class, "Okay, everyone. You should have finished counting up your isotopes by now, and hopefully you've managed to calculate the natural abundance in your sample."

She paused, gauging the reaction of the class, but it shouldn't take them too long, and she would be surprised if there were any issues with having that completed. She'd given them more than half of the class time, and they needed to move along to the last part of the lesson, "However, you have relatively small sample sizes. We're going to look at the affect that sample sizes have, so I would like you to, one table at a time, call out how many of each color you found. We'll total them and then see what the natural abundance of each species is over the larger sample of the entire classroom." She pointed to the table in the front corner, the one with three occupants, "Why don't you start us off?"

[Stefano Rice]

It didn't take long to count each of the colours and then add them all together and then count the chocolates in the bowl to make sure that their math didn't totally suck - because Seth refused to use a calculator for such basic math - and then the calculator came out to do the dividing, because while he might have been good with math, he wasn't cocky.

He just finished filling out his worksheet when the teacher called for their attention again and he nodded as she said that they would do it as an entire class since their numbers were so small. He easily took up the task of spokesman for his group. "In our bowl we have: four orange, eight green, four brown, eleven red, and seven yellow." He flashed a smile as he sat back down and opened his folder where he quickly wrote up the five colours and created four columns, in the first column he put down the numbers he'd just given and had his pen poised for the answers from the other groups, he then total them up as they went and put their numbers at the bottom of each column - in their own, he put 34.

[Cara-Jean Kitchi]

Cara quietly did her own work, leaving her partner to do hers, and it wasn't long until she had the answers she needed. After checking them twice, she was happy with it, and placed her pen down.

Her eyes widened in horror when the teacher wanted one person from each group to call out the numbers and when it became evident that her partner was going to remain silent, she swallowed hard and looked at her paper. Unlike the boy who had just spoken, she chose to remain seated - standing wouldn't exactly do a lot to make her look bigger. In our bowl, we have four orange, six green, six brown, nine red, and ten yellow." She quickly lowered her head, hoping she'd at least spoken loud enough for the teacher to have heard her, as she would be completely humiliated if she had to repeat what she'd just said.

Opening her folder, she picked up a pencil and quickly drew up a graph like the one on their worksheet, with a few extra columns, and copied down the numbers she'd said as well as those the boy before her had said and waited for the other two groups to speak up.

[Athena Achilles]

Athena grinned. "I guess that leaves me with green and brown." She said with a shrug. "Don't you even think about eating any of my colours while you're counting your own!" She warned with a mock challenging look. "That won't stop me from swiping yours though."

After she'd done her counting and written the numbers down she began to work out the division part of the lesson. Her eyebrows shot up as Ms Sárközi spoke and she nodded. After listening to the other students she pipped up. "We have nine brown and five green." While the two groups that had spoken up so far had seemed to have one spokesperson, she decided to let Tijn speak up about the colours that he had counted - after all, he had counted three of them so there was no way she was going to make it look like she was doing all the work!

She wondered if they should be writing down the numbers that the other students had given, and decided to wait until they had all of the numbers so she could just write in the total number of each colour and then the total number of everything. 

[Martijn van der Berg]

Tijn raised an eyebrow, feigning an offended expression, "I would never!" He glared at the girl, "Unless, of course, prompted by the capture of some of my own molecules." Sure, they were candy, but he could at least play along with the idea behind the lesson.

When the teacher called the class' attention back to her, Martijn looked up, listening to the other groups and then Athena, blinking silently for a moment as he realized that she'd stopped so that he could list his own numbers, "Sorry. We had five red, ten yellow, and six orange." He watched as the teacher wrote the numbers down, then looked down to his own numbers, making sure that he'd done his percentages and then swiftly checking that they and Athena's added up to 100.

If he needed to, he figured, he would be able to get the numbers for the rest of the groups later. But for now, assured that nothing had gone wrong on their worksheet, Tijn looked up to see where this addition of everyone's numbers went. Probably to the fact that a smaller sample size wasn't always representative of the whole, and that large-scale was better, but perhaps the teacher was going off in another direction with that information too.

[Ráhel Sárközi]

Ráhel nodded as she wrote down each of the numbers as they were given to her by the groups, pleased to see that the numbers matched generally with what she remembered. After the three present groups had gone, Ráhel cast a glance at the empty table and then stepped to her desk, taking the sheet of paper and adding their numbers to the general total, before writing up the actual total of colors for all of the groups, "So, as you can see, some of these don't actually match up with what you got. When you take a very small sample, of about thirty candies, as you all had, then you can get skewed results, because one difference has a much larger impact."

She wrote in the number '130' for the total column, "I'm just going to tell you that there are 130 candies in total. Now, I'm going to do the natural abundance for the brown candies, and I want each of you to figure out one of the others." She looked around briefly, matching faces to names before she spoke again, "Athena, green. Martijn, orange. Cara-Jean, red. Stefano, yellow. You have sixty seconds." It shouldn't take them that long, considering it was only a division, and by the time the sixty seconds were up, she'd written the brown candies up on the board, as well as the 'weights' of each isotope, off to the side, "Okay, let's hear them, one at a time."

She wrote up the numbers as they were given, then nodded, "Very good." That part was generally simple. The next part, sometimes students didn't wrap their head around quite as easily, "So now, we know generally how present each of these isotopes is in nature, or at least, in this classroom. Given these weights, here," she indicated the weights that she had written up on the board, "and the percentages that we calculated, we can figure out the average atomic mass of chocolatium as a whole. Does anyone know how to calculate a weighted average?"

Brown - 10.5
Green - 11.2
Yellow - 10.0
Orange - 11.7
Blue - 11.4

Here, you don't have to do maths:

Isotope	Number Found (NF)	Total Number (T)	Natural Abundance (NF÷T)
Brown	__27___	__130__	__.208_
Red	__30___	__130__	__.231_
Green	__26___	__130__	__.200_
Yellow	__28___	__130__	__.215_
Orange	__19___	__130__	__.146_