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Team 5 Ryan, Luke, Brit, Cheyenne 2/22/08 Chemistry Unit- Our Team Notes-

Our elements- Hey, I'm Selenium and I love many things. Especially, TV cameras, and photoelectric cells. I'm also a lifesaver I work around the clock to save people from cancer and heart disease.

I'm Oxygen. You need me to live, make water,and fuel for rockets. Every cell in your needs oxygen.

Hey i'm Gold. I can be used in many different ways. A few are in jewelry, filling for teeth, use to make coins, gold leaf, and some isotopes are used to treat certain types of cancer.

3/25/08  Here are some notes about three people that were important in discovering what atoms were (what did they believe)  **Dalton-** Wanted to know why elements combined in specific properties based on mass. His results said that they do this because they are made up of indiviual atoms. His theories state that 1- All substances are made of atoms that cannot be created, divided,or destroyed, 2- Atoms of some elements are alike, atoms of different elements are different, 3- Atoms join with other atoms to make new subsnces.
 * Democritus- ** Everything can be cut down to an atom. Atoms are small hard particles that can form things. Atoms are always moving and when joined togetherform things.


 * Aristotle- ** Matter was earth, air, fire, and water.
 * Thomson- ** He discovered that atoms can be divided into smaller parts. Corpuscles are in every type of atom and are identical. Negatively charged particles found in all atoms are called electrons.

3/4/08 Our new chemistry lab-

Try our new group lab at home!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Purpose- How dissolving a solute can affect the temperture of a solution IV-Amount of copper sulfate (grams) Control || 1g || 2g || 3g || 4g || 5g ||
 * 0g
 * 6 trials || 6 trials || 6 trials || 6 trials || 6 trials || 6 trials ||

DV-Temperature (C) Control- 0 grams Constants- same temperature sensor, solvent (water), starting temperature, same amount of water (50mL),syrafoam cup, balance Our groups hypothesis- The temperature will go up a little bit as we add more copper sulfate. This will make the solution dissole quicker. Prcedures- 1. Measure out 5 1g portions of copper sulfate on weighing papers 2. Measure out 50mL of water with graduated cylinder 3. Pour water into the styrofoam cup 4. Set up the computer on a high surface and attach the temperature sensor **(hold the sensor so it does not tip the styrofoam cup)** 5. Start a data run and record the temperature of the water for 1 minute 6. At 60 seconds intervals add 1g of copper sulfate and stir with the temperature sensor

Our group's results- Wieght of paper- .7 grams temperature of the water after i minute- 21.4 C 1st pour of copper sulfate- 21.2 C 2nd pour- 21.0 C 3rd pour- 20.8 C 4th pour- 20.6 C 5th pour- 20.4 C Average temperature- 20.9 C

Check out our results graph to see what happened in our lab!

How do your results compare to ours!!??

Cheyenne- The things I hope we will do are expierments. I hope we don't take a lot of notes, lab reports, and make huge messes.

Brit- I hope we will do a lot of expariments and mix weird chemicals. I don't want to make a huge explosion and someone getting hurt.

Luke- I would like to mix chemicals. I don't want to do lab reports.

Ryan- I would like to mix liquids (chemicals). I don't want to do notes n' stuff

Our Review Questions for Chapter 10

1. What is the difference between temperature and thermal energy.

2. What is the definition of an insulator?

3. What is the definition of Secific Heat Capacity?

4. What is the boiling point for Fahrenheit, Celsius, and Kelvin.

5. What is the definition of thermal expansion?

Don't peek at the answers, try it yourself first!!!!!!!!!!!!!!!!!

Answers: 1. Temperature: the average kinetic energy of the particles in an object, Thermal Energy: The totall energy of the particles that make up an object.

2. An insulator is a substance that conducts thermal energy well.

3. Specific Heat Capacity is the amount of energy needed to change the temperature of 1kg of a substance by 1 degree celsius.

4. Fahrenheit: 212 degrees, Celsius: 100 degrees, and Kelvin: 373K

5.Thermal expansion is the increase in volume of a substance due to an increase in temperature.

Need help Studying check out our cite! See some things we don't know! Important information: Chapter 2- meniscus- the curve at a liquids surface by which you measure the volume of the liquid with inertia- the tendency of all objects to resist any change in motion newton- the SI unit of force

Chapter 3- Boyle's Law- the law that states for a fixed amount of gas at a constant temperaturethe volume of gas increases as its pressure decreases. Charle's Law- the law that states that for a fixed amount of gas at a constant pressure the volume of a gas increases as its temperature increases.

Chapter 10- Thermal Expansion- the increase in volume volume of a substance due to an increase in temperature.

Chapter 9 information: Energy- the ability to do the work, and work is the action results when a force causes an an object to move in the direction of the force, both energy and work are expressed in Joules. There are two main types of energy which are Kinetic and potential energy: Kinetic energy: energy of motion (speed and mass) deals with thermal energy, electical energy, sound energy, nuclear energy, and light energy. Potential energy:the energy of psition or shape (stored height and weight) deals with gravitatonal potential energy, and chemical energy. Nonrenewable resorces include things like coal, petroleum, and natural gas Renewable resorces include things like solar energy, energy from water, wind energy, geothermal energy, and biomass

1/24/08 Energy Resource- a natural resource that can be converted by humans into other forms of energy in order to do useful work. Nonrenewable Resource- a natural resource that cannot be replaced or that can be replaced only over thousands or millions of years. Renewable Resource- a natual resource that can be used and replaced over a relatively short time. Fossil Fuels-a nonrenewable energy resources that form in the Earth's crust over millions of years from the buried remains of once-living organisms.



This is our groups expierment to see where kinetic energy comes from when an object rolls down a hill 2/7/08-2/8/08

Our super fast Peemp-mobeal Our first test- the first is different then the second test
 * Height of ramp(m) || Length of ramp(m) || Mass of car(kg) || Weight of the car(N) || Trial 1(s) || Trial 2(s) || Trial 3(s) || Average Time(s) ||
 * 0.22 || 1.00 || 0.0383 || 0.383 || 0.81 || 0.72 || 0.72 || 0.75 ||

Our second test-
 * Height of ramp(m) || Length of ramp(m) || Mass of the car(kg) || Weight of the car(N) || Trial 1(s) || Trial 2(s) || Trial 3(s) || Average Time(s) ||
 * .37 || .90 || .0383 || 0.383 || 0.47 || 0.53 || 0.47 || 0.49 ||

Our in class expierment- Our Results for Our in Class Expierment- Average Speed- Length of ramp divided by the average time- .90/.79=1.14m/s Final Speed- 2 multiplied bythe average speed- 2*1.14=2.28m/s Kinetic Energy-(mass) multiplied by (final speed)^2 divided by 2- 0.383*2.28^2 / 2= .995 j Gravitational Potential Energy- weight multipied by the height- 0.383*.14= .05362 j
 * Height of ramp(m) || Length of ramp(m) || Mass of car(kg) || Weight of car(N) || Trial 1(s) || Trial 2(s) || Trial 3(s) || Average Time(s) ||
 * .14 || .90 || 0.0383 || 0.383 || .88 || .75 || .75 || .79 ||

Thursday, Feburary 28th

=**//__ Definitions: __//**=

**__Soluble:__** Capable of being dissolved.


 * __ Insoluble: __** Incapable of being dissolved.

__** Solvent: **__ The substance in which a solute is dissolved to form a solution.


 * __ Solute: __** The substance that is dissolved to form a solution.


 * __ Solution: __** A mixture that appears to be a single substance but is compoosed of particles of two or more substances that are distributed evenly amoungst each other.


 * __ Dissolve: __** To melt or liquefy into a solute.