Homework 10

Objective 1
1. A solution is a mixture of two things, and one is solute and the other solvent, a colloid is two things mixed together but water separate out, example milk. A suspension is when components will not settle out so they will not stay together, example oil and water. http://chemistry.about.com/od/lecturenotesl3/a/colloids.htm
2. They dissolve into solvent.
3. They make the freezing point lower and boiling point higher, example washer fluid in your car and salt on an ice road.
4. You have made a suspension because the water and food coloring will mix but then level out again.
5. The solute might either raise the boiling point or lower the freezing point.
Objective 2
1. It is measured on how much of one substance is mixed with another.http://en.wikipedia.org/wiki/Concentration       I pretty much did a direct qoute
2. It is important so you will know how well it mixes so you can identify how much solute is added to the solvent.
3. If it is a covalent or ionic bond.
4. Some substances will not mix if he solvent is too cold or too hot.
5. This will help because if you know what things will bond and what will not bond, you can rule out certain
substances.
Objective 3
1. Conducts electricity, sour tasting, reacts with base to neutralizes its properties, reacts with active metals to liberate hydrogen gas (H2)
2. Conducts electricity, Bitter tasting, reacts with acids to neutralizes its properties, feels slippery to skin. BOTH ONE AND TWO ARE FROM the first thing that comes up when you search four propeties of acids, url would not copy
3.Litmus paper will change colors depending on an acid or base and if it is a 1-6 it is an acid 7 is neutral  and 8-14 is a base
4.  If the food has an ingredient ending in "ic"
5. The acid in the fertilizer can burn your hands or react with your skin and give you a harmful rash.
Objective 4
1. H3O+  are found in acids
2. in water acids and bases form positive ions
3. It would be H+NO3    http://answers.yahoo.com/question/index?qid=20090430035238AAt53le
4. How strong the acid or base is.
5. The acid with a Ph of 6 would have less H+ ions than and acid with a Ph with 3
Objective 6
Acid       Taste sour

·         Corrosive- react with medals and corrodes it

·         Changes Litmus paper to “red”

·         Produce Hydrogen ions H⁺

·         Acid will end in “ic” example, Sulfuric,  acetic

·         Ph measured 1-6

      Neutralization- when you combine the opposite a substance with the substance there for equalizing the substances
      indicator- substance or object that tells if something is happening or not
      corrosive- when an object is able to be broken down releasing hydrogen and the object goes away or folds up 
      Hydroxide ion- is a negatively charged particle  that is found in bases

  

Homework 10

Objective 1
1.

Test 9 Collin and Andre

1. A thermometer measures how fast the particles in the air are moving, which is thermal energy.

2. Some materials are more conductive than others. Like copper is more conductive than glass.

3. Convection, Conduction, Radiation.

4. 209,000 j

5. I would set up a tent that would make convection of heat in the tent. After a while my body heat would warm up the tent.

Homework 9

Objective 1
1. Celsius, kelvin, fahrenheit
2. Temperature is the measure of thermal energy and heat is created by thermal energy. Craig helped
3. It means the object is very heated so it raises the temperature.
4.your hand gives off heat and makes the ice cube warmer because the energy is transferred.
5.Some objects are more conducive to heat than others.
Objective 2
1. With mecury that expands or contracts according to heat.
2.All of them calculate by how much matter and how fast the particles are moving inside of the object.
3. 5.0 celsius is 41 farehnight.http://www.google.com/search?hl=en&client=safari&q=what+is+5.0+celcus+to+farhenith&aq=f&aqi=m1&aql=&oq=&gs_rfai=
4. 460 degrees in celsius
5. 209000joules
Objective 3
1. Radiation, Conduction, Convection
2. Heat rises
3. conductor help heat move out and insulator hold heat in
4. A copper pipe would work better as a conductor because it transfers heat best
5. I would put up a tent, then build a fire close to the tent, the tent would use convection after you got in it because the heat would be trapped and start to move around in the tent. The fire would help to warm the tent if the fire was close enough to give heat to the tent but not close enough to burn the tent this would be using radiation to help get heat waves through the outside of the tent.
Objective 4
1.Tempature and pressure cause matter to change state
2. The particles get excited and expand therefore creating thermal energy
3. It stays the same because only particles are expanding or condensing and getting close to each other.
4. Its particles are heated up and they expand therefore going into the liquid state.
5.The water inside will start to expand and boil therefore wanting to let out steam and when you dont let the steam out by poking holes it will blow up.
Objective 6
Will be turned in for Mr. H to look at.

Homwork 8

Object 4
1. Thermal particles will move faster when it is warmer and move slower when it is colder.
2.The particles around the ice cream are moving faster than the ice cream and cover more area therefore the ice-cream will melt because it is being overtaken by the faster moving particles.
3.When particles vibrate a lot that means they will start to evaporate.
4. Condensation occurs when the air below is cooler than the air above so the particles above will gain pressure and fall down into cooler area because they can go any higher.
5. When the particles ace a dramatic change is movement either moving faster or slower.

Homwork 8

Objective 5
1. The relationship is pressure and volume.
2. The air will expand and blow the balloon up at high pressure.
3. PxV=C
4. When the doctor takes blood pressure and when they run your blood through a machine.
5. So that they will equalize  they will not get as much nitrogen in there lungs and you will get the bends.

Homework 8 Objective 3

1. Photosynthesis
2. It has kinetic energy http://wiki.answers.com/Q/What_kind_of_energy_does_a_rolling_bowling_ball_have
3. Potential energy
4. Electromagnetic energy is like radio waves. http://griffinscience.com/
5. Electric energy, example power going into computers or anything electric.

Objective 2

1. The difference from a chemical  change to a physical change is that a Physical change is when, for example a cube of ice can melt and it can freeze again into a solid ice cube. A chemical change, for example is when you burn a log you cant change it back into a solid log it is ashes. http://www.physlink.com/education/askexperts/ae244.cfm
2. It can change in Burning, color change, smell change, and temperature change.http://wiki.answers.com/Q/Name_4_ways_you_can_tell_a_chemical_reaction_take_place
3. Mass is nor created or destroyed in a closed system, by Sr. Isaac  Newton.
4. Temperature and thermal energy are different is temperature is how hot or cold it is and thermal energy the storage of kinetic energy in the atoms of a particle.  HELPED BY HAMPTON
5. The exothermic reaction is fire,and endothermic is like when you have a rock in a fire and it gets warmed up and is hot because of the fire not producing its own heat.

Homwork 8

Objective 1
1. Mass is more useful than weight because weight changes acording to your height from sea level.
2. 619.65cm3 
3. g/cm3 
4. D=M/V
5. LxWxH