Objective 3

1.  The four properties of acids are they are sour, corrosive to metals and skin, PH of 7 and a POH of 7, turns blue limus paper red, contains H
http://wiki.answers.com/Q/What_are_five_properties_of_acids_and_bases#ixzz170XwAOHw

2.  The four properties of bases are they are bitter, slippery and soapy, PH of >7 and a POH of <7, turns red litmus paper blue, and they have hydroxide 
http://wiki.answers.com/Q/What_are_five_properties_of_acids_and_bases#ixzz170ZYOrP2

3.  The litmus paper turns red if it's and acid and turns blue if it is a base

4.  If it shows one of the signs or properties in answer 1

5.  The fertilizer can hurt your hands if it gets under your skin and will burn and itch

Objective 2

1.  Concentration is measured in moles
http://wiki.answers.com/Q/What_is_concentration_measured_in

2.  Solubility is important in identifying substances because it can dissolve, making the substance only the substance
http://answers.yahoo.com/question/index?qid=20081004175436AA5yxLo

3.  The main factors that affect a substances solubiltiy is temperature and pressure
http://wiki.answers.com/Q/What_factors_affect_the_solubility_of_a_substance

4.  The temperature affects a substances solubility by it's molecules being a certain temperature, it affects their ability to dissolve

5.  Solubility helps identify a substance by it's pressure, temperature, and ability to dissolve quickly 

Objective 1

1.  Some of the characteristics of suspensions, colloids, and solutions are they are mixtures and they are all made up of particles.

2.  When a solution forms, the particles of a solute forced to leave the solution
http://wiki.answers.com/Q/What_happens_to_the_solute's_particles_whenever_a_solution_forms

3.  A solute affects the temperature of a solvent because of it's particles leave, the boiling point gets colder...etc
http://wiki.answers.com/Q/What_effects_do_solutes_have_on_a_solvents_freezing_and_boiling_points

4.  A solution because you are adding something to something that is already there and creating something new.

5.  A solvent affects a solute's boiling point, because if it's particles leave then the solute's boiling point gets harder or easier to reach, depending on what temperature the molecule was
http://wiki.answers.com/Q/What_effects_do_solutes_have_on_a_solvents_freezing_and_boiling_points

Objective 4

1.  Matter changes state because of temperature and pressure
http://wiki.answers.com/Q/What_causes_matter_to_change_states

2.  The substance's particles move faster eventually changing from a solid to a liquid
http://wiki.answers.com/Q/What_happens_to_the_particles_of_a_solid_as_the_thermal_energy_of_the_substance_increases

3.  The temperature of  the matter remain the same because when it gets cold the particles still jumble together making it warm

4.  A solid melts because of fire or heat
http://wiki.answers.com/Q/What_causes_a_solid_to_melt

5.  You poke holes in the potato skin because it's almost waterproof and if it burns or explodes you can't help it
http://wiki.answers.com/Q/Why_should_you_poke_holes_in_the_skin_of_a_potato_before_it_is_baked

Objective 3

1.  The three forms of heat transfer are Conduction, Convection, and Radiation

2.  Heat moves upward

3.  The difference between conductors and insulators is insulators slow down the process of conduction by itself where as conductors let energy flow through it easily
http://wiki.answers.com/Q/What_is_the_difference_between_conductors_and_insulators

4.  I think a conductor would work best because it goes slow and steady in the procces of transfering energy

5.  I would keep warm by making a fire first, because fire provides warmth fast, if you know how to use it, but a tent would also be important because it helps the heat molecules stay in the tent longer

Objective 2

1.  Thermometers measure temperature by using a substance called mercury (the red stuff inside the tube) because it expands when it's hot and decreases when it's cold
http://wiki.answers.com/Q/How_do_thermometers_measure_temperature

2.  The three temperature scales are different because in faranheit, water boils at 212 degrees faranheit and freezes at 32 degrees, in kelvin, water boils at 373 kelvin and freezes at 273 kelvin, but in celsius water boils at 100 degrees C, and freezes at 0 degrees C

3.  5 degrees celsius x 9/5 + 32= Farneheit , so 5 x 9/5= 9 + 32= 41 degrees faranheit

4.  860 degrees faranheit x 5/9 - 32= Celsius, so 860 x 5/9=477.777 - 32 = 445.777

5.  5,000 kelvin

Objective 1

1.  The three main temperature scales are celsius, faranheit, and kelvin
http://www.homeatlastinc.com/Bedroomset.html

2.  Thermal energy relates to temperature and heat because thermal energy is a type of heat energy and so is temperature
http://wiki.answers.com/Q/How_does_temperature_relate_to_thermal_energy

3.  Having a high specific heat is the ability of an object to stabilize itself on the heat around it
http://www.sciencebyjones.com/specific_heat1.htm

4.  An ice cube melts because the H2O particles change from ice to a liquid because of the temperature
http://uk.answers.yahoo.com/question/index?qid=20070117113616AAq4Jee

5.  Some objects get hot more quickly than others because of their specific heat capacity and it's thermal conductivity
http://answers.yahoo.com/question/index?qid=20090205144702AAzZ3jj

Objective 5

1.  Boyle's law describes the relationship between the absolute pressure and the volume of a gas
http://en.wikipedia.org/wiki/Boyle's_law

2.  Because high-altitude balloons displace a greater weight than itself so it could blow up or not be able to fly if it wasn't half filled
http://www.google.com/search?hl=en&rlz=1R2SUNA_enUS327&q=why+do+scientists+only+half+fill+high+air+balloons%5C&aq=f&aqi=&aql=f&oq=&gs_rfai

3.  The equation for Boyle's law is PV = k or you could say P₁V₁=P₂V_2.
P= the pressure
V= the volume of the gas.
K= the value representative of the pressure and volume
http://en.wikipedia.org/wiki/Boyle's_law

4.  It could  help with how much pressure you should press on somebodys volume???? I was completely confused on this one

5.  Boyle's law gives simple rules to Scuba diving, for example consider the pressure of the water, so how far down can you go, the volume of your body....etc
http://scuba-doc.com/surgdiv.html

Objective 4

1.  The thermal energy of particles go up when it's cold because when temperature goes down, the volume goes down, and the pressure goes up.   But when it's hot the temperature goes up, the volume goes up, and the pressure goes down, and the thermal energy goes down.

2.  Ice Cream melts on a warm sunny day because matter changes it's state depending on the formula stated in question 1 so when it's warm the ice cream will change it's state from a solid to a liquid.
http://www.word-detective.com/howcome/icecreammelt.html

3.  When particles melt they get all jumpy (like gray's muffin joke) and they start to get scared in vibrate like the formula in statement 1

4.  Condensation will occur when the humidity rate is near 100%
http://answers.yahoo.com/question/index?qid=20090322180353AA0fGFw

5.  Sublimation occurs when a solid goes straight to a gas.
http://www.google.com/search?hl=en&rlz=1R2SUNA_enUS327&q=when+does+sublimation+occur&aq=0l&aqi=g-l1&aql=f&oq=when+does+sublimaation+occur&gs_rfai=

 

Objective 3

1.  The six forms of energy related to changes in matter are electromagnetic, potential, kinetic, electrical, chemical, and transforming energy.
http://wiki.answers.com/Q/What_are_six_forms_of_energy_related_to_changes_in_matter

2. A rolling ball has kinetic energy
http://wiki.answers.com/Q/What_type_of_energy_does_a_ball_have_when_it_is_at_the_top_of_a_ramp

3.  A bolling ball still has kinetic energy

4.  Electromagnetic energy is electromagnetic waves that can be gamma rays, X rays, radio waves...etc, the formula for electromagnetic energy= EME = hf= zC^2f = zCI=CV= WbI=VWb/z.  
http://www.buzzle.com/articles/what-is-electromagnetic-energy.html
http://wiki.answers.com/Q/What_is_electromagnetic_energy

5.  The energy of electrons moving around is electromagnetic energy

Objective 2

1.  The main difference between a physical change and a chemical change is in a physical change no new substances are born.  In a chemical change one or more new substances are born
http://www.physlink.com/education/askexperts/ae244.cfm

2.  4 ways to tell a chemical change has occured are a temperature change, a colour change, a gas given off, or a sound given off
http://wiki.answers.com/Q/How_can_you_tell_a_chemical_reaction_is_occurring

3.  The law of conservation of mass states that matter cannot be changed or destroyed, but it can change forms and Antoine Lavoisier
http://wiki.answers.com/Q/What_is_the_Law_of_Conservation_of_Mass

4. Thermal Energy and Temperature are different because thermal energy is the total amount of kinetic energy in a substance and temperature is the average amount of kinetic energy in a substance
http://wiki.answers.com/Q/How_is_temperature_different_from_thermal_energy

5.  An example of an exothermic reaction is adding water to anhydrous copper (II) and sulfate
http://en.wikipedia.org/wiki/Exothermic_reaction
An example of an endothermic reaction is dissolving ammonium chloride in water
http://chemistry.about.com/od/lecturenotesl3/a/endorxns.htm

Objective 1

Question 1
Scientists prefer to use mass rather than weight because your weight can sometimes vary as to where you are.    
http://wiki.answers.com/Q/Why_is_mass_more_useful_than_weight_for_measuring_matter

Question 2
The volume = length x width x height : 15.3cm x 9cm x 4.5cm
619.65cm3

Question 3
The unit measurement for density is usually grams or kilograms
http://wiki.answers.com/Q/What_unit_is_used_to_measure_density

Question 4
The formula for finding density is mass/volume
http://wiki.answers.com/Q/What_is_the_formula_to_finding_density

Question 5
The formula for finding volume is length x width x height

Question 5 on test 1

I think in the future we will have a much more complicated model of the atom. Right now our atom includes the proton, nuetron, and electron. I think in 3,000 the atomic model will still be made of protons, neutrons, and electrons. Protons and Neutrons are made of quarks and gluons, but what are they made of?    Electrons are made of electrons but I don't think that something can be made of itself.  What is the root of electrons?  If the root of electrons is electrons than electrons are made of electrons and those electrons are made of other electrons and so on.  Who knows if all that is true?  The world keeps on getting smarter and smarter.  If science continues it's pattern then the atomic model will change in between now and 3,000.  But if the worlds going to end in 2012 then we won't get to 3,000.

Question 2 on test 1

We know about electrons even though they are extremely small. Ernest Rutherford did the Gold Foil Experiment in the early 1900s.  Rutherford fired alpha particles at the gold foil and most went through the gold foil but some bounced off at sharp angles. This experiment and many others like it concluded that atoms had both positively and negatively charged particles. This experiment and many others like it and other chemical and nuclear reactions that there are definitely electrons, protons, and neutrons.

Question 1 on test 1

Question #1

1. Who said that if you cut something many times that one part would be to small to cut?
A. Dalton B. Will
C. Democritus D. Thomson

2. What model of the atom did Dalton create?
A. The onion model B. The pool ball model
C. The ring model D. The awesome model

3. Who created the Berry Muffin Model?
A. Dalton B. Democritus
C. Rutherford D. None of the above

4. Who discovered neutrons?
A. Thomson B. Rutherford
C. Chadwick D. Rory

5. How many atoms are there in the world?
A. 10 to the -9 B. 600,000
C. 10 to the -8 D. 0

6. How many quarks are in a proton?
A. 10 B. 3
C. 4   D. Who knows

7. What are electrons made of?
A. electrons B. Quarks
C. Gluons D. All of the above

8. What is a neutrons atomic mass?
A. 1kz B. 4
C. 2amu D. 1amu

Short answer

9. Who did Ernest Rutherford prove wrong?

10. What model did Neils Bohr create?

11. Where did Democritus live?

12. What year did Chadwick discover neutrons

13. What does AMU stand for?

14. How many or much AMU are electrons?

15. What are Neutrons and Protons made of?

16. How many types of quarks are there?

T/F

17. Rutherford had made the gold foil experiment

18. Thomson discovered atoms

19. Neils Bohr was a student of Chadwick

Science Hw 8/31/10

J J Thomson differed from Democritus in his scientific method to discover the atom.  Democritus only made a hypothesis that if you cut something enough times it would be to small to cut.  Democritus stated his hypothesis without doing an experiment to prove his hypothesis right.  Thomson discovered that atoms had negatively charged particles, which he called electrons, and he did an experiment and used the scientific method to prove his hypothesis.  

Science Entry 1

I am Rory.  This is my 8th grade science blog.