Mrs Chen Chow!




It's the end of the school year. So much has happened. I will truly miss being a sophomore.

bay to breakers 2010

Jess, Dean Karnazes, and I
dead tired. i went to paces for polio last night and slept over. i didn't really sleep.. got about maybe three or four hours? i can't even remember. and this morning i had to wake up hekka early to bart to bay to breakers. it was sooo fun!
met dean karnazes! he's amazing. he ran 50 marathons in 50 consecutive days in 50 states... CRRRAZY<3

Bye TRACK !

Mini Proj #3 MAKING CLAY

In class, we made CLAY! it was like dough . i felt like a baker again!

Materials:

• vegetable oil
• salt
• food coloring
• your heart
• dry hands
  

water

flour

Instructions, step by step:


1. Put all ingredients in a bowl or any container that is suitable for chemistry
2. Mix ingredients together with your hands

3. Pour out

How to make clay!

Scientific:
mixing and boiling things together such as flour, veggie oil, and salt creates interesting things
The result is hot and squishy.
When it is cooled down, it hardens due to the molecule packing.

PHOTOCREDIT: Chantel Yip!

ChemStd 11d:

Students know the three most common forms of radioactive decay (alpha, beta, and gamma) and know how the nucleus changes in each type of decay


Alpha: ( α) is a type of radioactive decay in which an atomic nucleus emits an alpha particle, and thereby transforms (or 'decays') into an atom with a mass number 4 less and atomic number 2 less. An alpha particle is the same as a helium-4 nucleus, and both mass number and atomic number are the same.
Alpha 's mass is 4.0 units.
Their charge is +2.
Basically, alpha decay affects the nucleus by a loss of 4 in the mass (reducing by 4) and a loss of 2 in the atomic number (reduces by 2)

For example:

23892U	→	23490Th	+	42He2+|[1]

Beta:a type of radioactive decay in which a beta particle (an electron or a positron) is emitted. In the case of electron emission, it is referred to as beta minus (β^⁻), while in the case of a positron emission as beta plus (β⁺)

Beta's mass is .0005 units.
Their charge is -1.
Basically, this type of decay affects the nucleus by having an increase in the atomic number, of one(+1). Their mass does not change.

Gamma: Gamma decay is one of the three radioactive decay modes available to atomic nuclei, along with alpha and beta decay. In alpha and beta decay, the atomic number of the nucleusenergy state decays to a lower-energy state by emitting a high-energy photon. Following an alpha or beta decay, the number of protons and neutrons in the nucleus has changed, and the resulting nucleus may not be in its lowest energy state (called the ground state). As a result, the nucleus will decay to the ground state by emitting one or more gamma-ray photons.
changes, but in gamma decay the atomic number does not change. In gamma decay, a nucleus in an excited Gamma has no mass.
Their charge is neutral.
Basically, in gamma decay, the atomic number does not change.



RADIOACTIVE DECAY DEMONSTRATION

Steps to solve this nuclear equation:
²⁷
₁₃Al + ⁴₂He ---> ³⁰₁₅P + ?
1)The sum of the mass numbers of the reactants equals the sum of the mass numbers of the products .

Using this rule, you can figure out any missing particles in the equation.

2)

To find the answer, you must add the mass and atomic numbers of the reactants. So, 27 + 4 = 31 , and 13 + 2 = 15 . This means that the products must have a total mass number of 31, and a total atomic number of 15. Subtract the known products from the sums of the reactants. So, 31 - 30 = 1 , and 15 - 15 = 0 . So, the missing particle would be ¹₀N .

Still having trouble? Here are two useful sites!

Here's a link that taught me how to balance nuclear equations!

Print this out, and practice practice practice! It's a great strategy to build up those balancing nuclear equation skills :]

Today, we had a PAL track meet @ CSM. It was sooo fun! I didn't PR in my 3200 m run, but I still enjoyed my time there. We even had this whole massaging line chain. it was soo funny<3 :]

Mini Proj #2 :Bending glass.

We have been bending glass in chemistry lately, it's so fun :D


SAFETY PRECAUTIONS

• no loose clothing
• do not reach across the bunsen burner while the flame is on
  
• make sure an object is cooled before touching it
• always have your goggles on

PROCEDURE

1. Light the Bunsen Burner
2. Move glass around in the flame
   
3. When glass softens, bend glass to create bent glass!
   

SCIENCE
Solids (the glass tube) melt at high temperatures. Liquid glass is flexible and malleable while on the other hand, solid glass is brittle.

PHOTOCREDIT: CHANTEL YIp

Here is a link on how to bend glass!

Mini Proj #1: Chem Mini Project Blog Post!

photocredit to Jessica and I! we were both the major photographers of this very special event.

Ingredients:
-bananas
-flour
-sugar
-baking soda
-baking powder
-milk
-water
-nuts
-craisins
-any other condiments of your choice.
My partner, Jessica Lam and I baked Banana Nut Pound cake with peanuts and craisins today. It was very fun and exciting! So we had to measure the right amount of milk/butter/sugar/bananas/flour/baking powder/baking soda/water/cinnamon.
We blended all the ingredients together, poured it into pans, preheated the oven to 450 degrees, and BAM! A chemical reaction occurs: FOOOOD<3http://www.dianaskitchen.com/page/recipes03/0814_banana_bread.htm">link to the RECIPE!!






SCIENCE: I was able to create delicious dessert by using an oven heated at 450 degrees!
baking powder+flour+butter+ baking soda blended together and placed in an oven creates bread and cake-y like food=]




PHOTOCREDIT: Jessica Lam &
Chantel Yip

4/29/2010 Thursday: My first high school field trip.

A person was walking his pitbull mix in the canyon! Isn't he afraid he might get lost?!?

This is Aria next to a Redwood Tree.


Yesterday, April 29 , 2010 Olson's chemistry classes went on a field trip to Mills Canyon. Mills Canyon is like a hidden adventure nobody has heard of. I , personally never thought it went to deep and long. I only remember coming here for a cross country practice, but never have I gotten the chance to observe all the plants and things the Canyon has to offer.




View 4/29/10:Mills Canyon in a larger map

IProposeWe

I Propose We.. bake a banana pound cake! =]

Materials (ingredients)

-1 c. butter, softened
-3/4 c. sugar
-4 eggs
-5 ripe bananas
-1 tsp. vanilla
-2 1/2 c. whole wheat flour
-2 tsp. baking powder
-1 tsp. cinnamon

Procedure:
Preheat oven to 350 degrees. Lightly spray a cake pan with Pam. In large mixing bowl, cream together the butter and sugar. Place eggs, bananas and vanilla into blender. Blend at high speed until thoroughly blended. Add mixture in blender to mixture in mixing bowl. Beat these ingredients together at low speed.

In small mixing bowl, stir together the flour, baking powder and cinnamon. Slowly add dry ingredients to banana mixture, mixing at low speed. Beat at medium speed for 2 minutes. Place batter into prepared pan. Bake 50 to 60 minutes.

Cool 10 minutes, then take out of pan.

Safety precautions:
-Use Mittens/other materials to protect hands when taking out pound cake.
-Do not touch the pan of pound cake immediately after baking
-Wear an apron! You do not want to be sticky
-No loose clothing!
- All long hair must be pulled back/tied up

Scientific Principles:

1. Solids melt at higher temperatures.
2. Never use the same platter to carry raw burgers on the grill and then cooked burgers to the table.
   

http://www.cooks.com/rec/view/0,176,155180-236200,00.html



You may add nuts or chunks of banana to banana pound cake. Nuts enhance the flavor of the pound cake.

http://www.foodnetwork.com/recipes/emeril-lagasse/pound-cake-with-ice-cream-and-sauteed-bananas-and-ginger-syrup-recipe/index.html

Watch this video on youtube for a great demonstration!

http://www.youtube.com/watch?v=u3bzuemcW6E

Golf

In physical education class, golf is our new unit.

I always see gophers pop out and it is extremely cute! We named it put put.

When I play golf, I tend to chop the grass and the dirt out.

This is a nice golf website.

Golf is a very professional sport in which I will probably not play when I am older

Yay

Tonight, I'm going to a dinner banquet in the city. It's going to be @ a church.

So i'm paying $8 for this dinner

and hopefully it'll be tasty and fun! it's in SF, so i'm sure I will meet many new people


Full Life Christian Center on 3535 Balboa St

Sherry and I went on an adventure

SO i ran down to sherry's house, picked her up, and walked all the way to a beautiful apartment with a beautiful view. it was quite the adventure. We had like a 2.5 hour workout! impressive, i know!


http://en.wikipedia.org/wiki/Twin_Peaks,_San_Francisco,_California
Twin peaks is so prettttttttty!

Track meet 3/25/2010

We had a track meet today on March 25 ,2010. I was required to run the 3200 m, 800 m ,and of course the 4x4 relay.


Placed first for 800 m

2nd for women in 3200 . it was really painful today after running the 800 m.

and finally the 4x4. our group came last but that's okay. we enjoyed ourselves.

overall i had a good day

i've been waiting for this day forever to be over!
http://www.brunel.ac.uk/397/Brunel%20Masterplan/Sports%20Facilities/Sports%20Park%20%28External%29/Ath%20Track%20123.jpg

Cyrano

Today we received our first book, Cyrano.
http://en.wikipedia.org/wiki/Cyrano_de_Bergerac
Cyrano de Bergerac — born Savinien de Cyrano — was born into an old Parisian family and spent much of his childhood in Saint-Forget (now Yvelines). He went to school in Paris and spent his adult life there when he was not on a military campaign. He was not, therefore, a Gascon. Many of his fellow soldiers would have been Gascons, and their swashbuckling manner was much admired; so he may have cultivated a myth of Gascon origins. Although it is true that he was a popular poet and a fine swordsman who fought many duels, his abilities were embellished by Edmond Rostand, the playwright of Cyrano de Bergerac. Cyrano de Bergerac's writings do, in fact, indicate that he had an unusually large nose, of which he was quite proud.

http://upload.wikimedia.org/wikipedia/commons/thumb/2/27/Gravure-cyrano2.jpg/200px-Gravure-cyrano2.jpg

David Webb and Vaccums

David Webb is pretty awesome. He came in yesterday with his wife, Joann Webb. Together, they performed many experiments. Joann Webb, his wife, was more like his assistant though. They were both very friendly and entertaining.
here is a link about vacuums! You may learn about how interesting it is and how it works.


http://en.wikipedia.org/wiki/Vacuum

Using the vacuum he inflated a marshmallow and it became HUGEEe. it was pinkk , too, so it was really pretty.