HW 10

Objective 1

1) Suspensions have large solid particles, and colloids have smaller particles that are microscopic and are much smaller than suspensions and solutions. 
2) The particles dissolve into the solvent.  
3) The boiling point of the solvent will be higher without being a solution. The freezing point will be lower.
4) It would be a solution because water is the "universal solvent", and almost any solution mixed with water will disintegrate. 
5)Solvents make the boiling point higher, and the freezing point lower.
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Objective 2


1) Concentration is how much of one solution is mixed with another.
2) It is useful because you can use it to identify the substance because it is a type of matter.
3) The pressure, temperature, and polarity affect it.
4) Heat breaks the molecules apart of the solute and create solvent bonds.
5)It is helpful because it is a characteristic of matter.
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Objective 3

1) Acids taste sour, can change litmus paper from blue to red, react with metals to create gases, and react with bases to make water and salt.
2) Bases are bitter, feel soapy, can make the litmus paper blue again if it was red from an acid, and create salts with acids.
3) Yes, because acids make it red, and bases turn it back to blue.
4) The food would be sour, like a lemon.
5) You should wear gloves when spraying fertilizer because fertilizer sometimes has salts in it, which can burn your skin. 
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HW 9

Objective 1

1) Fahrenheit, Celsius, and Kelvin
2) Thermal energy relates to temperature and heat because heat is the transfer of thermal energy from an object with a higher temperature to an object with a lower temperature.
3) Having specific heat means having the amount of heat that's needed to raise the temperature of one kilogram by one Kelvin gram.
4) An ice cube melts in your hand because the heat from your hand is transferring to the ice cube and it is causing the ice cube to heat up and melt.
5) Some materials get hotter than others faster because the object either contains a lot of moisture, or if the object has a lower specific heat. (If the material had a higher specific heat, it would take a long time for it to heat up)


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Objective 2

1) Thermometers measure temperature by using Mercury inside of it, which get bigger when the temperature goes up, and gets smaller when the temperature is colder or gets lower.
2) The three types of temperature are alike because they all measure temperatures, but they're different because they all have different ways to measure the temperature.
3) 5 degrees C = 41 degrees F
4) 860 degrees F= 460 degrees C
5) 209,000 joules


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Objective 3


1) The three forms of heat transfer are conduction, convection, and radiation.
2) Heat always moves 
3) Conductors and Insulators are different because conductors transfer thermal energy well, but insulators don't transfer thermal energy well.
4) A copper pipe would work better as a conductor because conductors transfer
thermal energy in a metal a lot easier than other things. 
5) To keep warm, I would first create a fire. Then, I would heat blankets by the fire. Then I would stay in the warm blankets :) Creating the fire is conduction, and heating the blankets would also be conduction. 


Objective 4


1) Matter causes state because of pressure, temperature, or heat. 
2) The particles of the substance begin to move faster, causing the substance to heat up.
3) The temperature stays the same when the state of matter changes because the energy is being used to transform the matter, in stead of being used to change the temperature of the matter. 
4) Solids melt when they reach an extreme temperature, just like any other substance.
5) You should poke holes in a baked potato before baking it because the steam and heat from the baked potato will be kept inside of the potato, causing it to over heat and EXPLODE.


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Objective 5

1) Heat engines use thermal energy to create mechanical energy from the thermal energy. 
2) Internal combustion engines are different from external combustion engines because internal uses the fuel in a cylinder directly, but external uses an outside boiler to heat and then use the fuel. They're similar because they are both used on transportation vehicles today.
3) Cars use internal combustion engines because it would be difficult to drive down the road with an external combustion engine on the side of your car. This could cause many driving problems. (or that's what I think)
4) Inside of the refrigerant, liquid turns into a gas. This is to chill the items in the fridge without giving them frost or creating ice on them. 
5) If the compressor in a fridge stopped working, then it would affect the heat transfer system because the heat of pressurization wouldn't have anywhere to go, and the fridge would heat up.


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Science HW part dos

Objective 4

1) The thermal energy particles on a warmer day are moving around more and which causes it to be hotter. The thermal energy particles on a cold day are not as active, therefore it is cold.
2) Ice cream melts on a warm summer day because the thermal particles of the ice cream are not moving quickly, but then the heat from the fast moving particles in the air cause the ice cream particles to move quickly, and then it starts to melt. 
3) Vibrating particles have to do with the boiling point of particles because the hotter the particles get, the faster they move, so when they boil, they are at TOP SPEED. 
4) Condensation occurs when water turns from a gas directly to a solid. This can happen when water vapor touches a cold bottle or glass.
5) Sublimation happens when air saturated with water hits a sudden point of temperature that is below freezing. 

Objective 5

1) In Boyle's law, the relationship described is between pressure and volume. It states that if the volume goes up, pressure goes down, and when volume goes down, pressure goes up.
2) Scientist only half fill high altitude balloons because the higher the pressure is then the smaller the balloon is going to be, so the balloon only needs half as much air as it would in a normal area. 
3) pV=k is the mathematical equation, and the formula is when the amount of volume goes up then the pressure goes down, and when the volume goes down, the pressure goes up.
4) Boyle's law applies to physicians because the temperature of your body also applies to the law so if your temperature goes up your blood pressure goes down and when your temperature goes down your blood pressure goes up.
5) Scuba divers rely on Boyle's law because when the divers go down, their amount of pressure in their tanks and in their body will go up, and it seems that the air tanks are releasing air. Really the air tanks are expanding because when the pressure increases, the volume decreases. Sometimes you can notice this happening with your wet suit too, but it is most noticeable with the air tank.


Objective 6


1) Charles's law is the law that states when volume goes up, temperature goes up, and when volume goes down, temperature goes down too. 
2) quickly
3) Etienne Montgolfier was the first person to fly in a hot air balloon.




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Science HW part uno

Objective 1

1) The mass of the matter stays the same anywhere, but the weight of the matter could change depending on where it is.
2) 619.65 cm cubed
3) g/cm cubed
4) D= mass/volume
5) length x width x height

Objective 2

1) A physical change changes the state that the substance is in. It does not create a new a new substance. A chemical change can create a new substance and does happen on a molecular level.
2) Four ways that you can tell tell that a chemical reaction has taken place is it has changed colors or scent, its presence has changed, or its temperature has changed. 
3) The law of conservation of mass was created by a French Chemist named Antoine Lavoisier in 1789. The law states that mass can and is not created/destroyed during a chemical reaction. Basically when a chemical reaction occurs, the starting and ending mass are the same amounts. 
4) Temperature and Thermal energy are different because temperature is the measure of thermal energy in a substance.
5) An example of an endothermic reaction is ice cubes melting. An example of an exothermic reaction is condensation of rain water from water vapor or a cloud. 

Objective 3

1) Thermal energy, kinetic energy, electric energy, electromagnetic energy, potential energy and chemical energy. 
2) Kinetic energy
3) Potential energy
4) Electromagnetic energy is the energy of radiation.
5) It is chemical energy, and an example of chemical energy is plant photosynthesis. 


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Supersolids

Supersolids

"ScienceDaily (June 25, 2010) — New experiments are casting doubt on previously reported observations of supersolid helium. In a paper appearing in the current issue of Physical Review Letters (PRL), John Reppy (Cornell University) presents research suggesting that prior experiments that seemed to show signs of supersolidity were in fact the result of the plastic deformation of normal helium. "

to read the rest click here!

THESE ARE A FEW OF MY FAVORITE THINGS.

Blackberry Curve, Mumford and Sons, Modest Mouse, a Kangaroo hat (for Chaz), moccasins and of course my Longchamp bag. :)

Elephant Toothpaste AKA catlysts

Our experiment with catalysts was elephant toothpaste. We put dish soap, hydrogen peroxide, iodine, and water together to create a big fluffy mixture called elephant toothpaste (Well it was supposed to be big and fluffy, but too much dish soap ruins it) Anyways when these items were combined it made a chemical reaction that would create the big fluff. That was elephant toothpaste.

ELIZABETH EXTON is awesome and this was a fun experiment. LEAVING class NOW

bye kids

omg. lets learn this.

this is awesome. :D

WATCH ME

this is the best video. i love it. 


CLICK HERE.

test 1

cotton candy model

go to this link to see how to make a cotton candy model.....

The atom life so far....

The atom life begins when Democritus, an ancient philosopher, started the atom life. He discovered atoms and found out that atoms are always moving, are indestructible, and what lies between atoms is empty space. Well a long long time after Democritus, Dalton rolled around. Dalton discovered that one atom can combine with another, all atoms of a given element are identical, and that atoms cannot be created, destroyed, or separated into pieces. He was also the creator of the "beach ball" model.  Years after Dalton died.....J.J Thomson was created! Eventually Thomson became a scientist, and he discovered the electron. He explored the cathader rays, and found out that rays could be deflected in a magnetic field. He thought these things were waves, but actually they were what he called "corpuscles", things composed of light negatively charged particles. This later became the ELECTRON. He was also the creator of the "berry muffin" model. After Thomson died, Ernest Rutherford comes along. He was one of Thomson's students, and he proved his teacher WRONG! He did the gold foil experiment, and ended up finding the proton, a positively charged particle, opposite of the electron. He also found out that the majority of the atom's mass is found in the nucleus. Thus, he created the peach pit model. Sadly...people get old, so Rutherford died. :( Luckily, Niels Bohr comes along, and reverses the atom model, which now shows the "orbiting" electrons. This is also known as the "onion" model. After Bohr does what he can, Chadwick steps in. Chadwick discovers the neutron, the negatively charged part of the atom. Because of this discovery, he won the Nobel Prize for Physics in 1935. He also created the most modern-looking model with a proton, a neutron, and the cloud of electrons. After Chadwick left the earth, Shroedinger comes in. He decided to focus more on how to find the electrons and where they would be. Also while doing that, he made the foundations for the "quantam mechanics", or the most recent atom model. 

Sources: John Dalton Democritus James Chadwick J.J Thomson Ernest Rutherford Niels Bohr other?
 

For Mary Grace....

teletubbies... haha Mary Grace I hope you're happy hahaha

Extra Credit

My extra credit element is....Zirconiom! Atomic number- 40. Atomic mass- 91.224. Number of protons- 40. Number of electrons- 40. Number of neutrons- 51.

OH ANSLEY.

Random?

I am going to be posting some of my FAVORITE random pictures :)

- Elizabeth