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Feedback Comments on Matter

by Ron Kurtus

A total of 250 comments and questions have been sent in. They are listed according to date.



List of next 10 letters

Topic

Title

Country

Kinetic Theory of Matter What is the evidence of the kinetic theory of matter? Ghana
 
Changing States of Matter Slope in change of state Nepal
 
Atoms What is the function of protons in an atom? Zimbabwe
 
Fluid Pressure Fluid pressure in absence of gravity India
 
Changing States of Matter How does temperature affect state of matter? India
 
Atom as Solar System Ideas about origin of Universe USA
 
Dry Ice Pressure needed to make CO2 a liquid USA
 
Changing States of Matter Why do gases expand uniformly? Malawi
 
Changing States of Matter How can I attend the school? Ghana
 
Changing States of Matter What is the level of the school? Ghana
 

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First 10 letters


What is the evidence of the kinetic theory of matter?

Topic: Kinetic Theory of Matter

Question

March 4, 2014

What are the evidence for the kinetic theory of matter?

Michael - Ghana

24572

Answer

The Kinetic Theory of Matter states that matter is composed of a large number of small particles—-individual atoms or molecules—-that are in constant motion.

It is was first determined by what is called Brownian Motion, where fine dust particles floating in water were seen to move about as if moving molecules were colliding with the particles.

Also, the diffusion of one fluid in another is also evidence of the theory.

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Slope in change of state

Topic: Changing States of Matter

Question

February 19, 2014

What is the Slope of graph between temperature and heat in change of state? Answer quckly

Sushant - Nepal

24541

Answer

The slope of temperature/heat in change of state depends on the material.

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What is the function of protons in an atom?

Topic: Atoms

Question

January 25, 2014

what is the function of protons in an atom

tamuka - Zimbabwe

24463

Answer

Protons make up the nucleus of an atom, along with neutron particles. The number of protons determines the element. For example, a nucleus with two protons defines the element Helium. Also, the number of protons determines the number of electrons. Helium has two electrons for its two protons.

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Fluid pressure in absence of gravity

Topic: Fluid Pressure

Question

January 9, 2014

1-In the absence of gravity will there be no pressure at any point inside a staionary fluid? 2-In the absence of gravity will there be no uptrust upon objects inside fluid? uptrust=vdg pressure=hdg actually there was a question in my exam that which of the following property of fluid will disappear in the absence of gravity.The alternatives were pressure, upthrust,viscosity,surface tension. Thanks in advance

Ranjan - India

24422

Answer

If a fluid is in a closed container and there is no gravity (like in outer space), there will still be pressure in all directions, depending on temperature.

Viscosity and surface tension are functions of molecular attraction and not gravity.

I hope that helps.

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How does temperature affect state of matter?

Topic: Changing States of Matter

Question

December 14, 2013

explain how temperature will hellp in the chaning state of matter.

sravan - India

24328

Answer

The state of a form of matter depends on the combination of temperature and pressure. If the pressure is the same, increasing the temperature beyond the freezing point or boiling point for the substance with cause a change of state.

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Ideas about origin of Universe

Topic: Atom as Solar System

Question

December 9, 2013

I have always wondered about the origin of the universe and have come to a philosophical conclusion that it is as you are trying to disprove here. I would like to talk to you about it.
My thoughts are this. That our solar system IS like the bohr model of an atom. That our solar system IS an atom in a larger universe.
But my difference is in where we are located. If you imagine taking a trip far out beyond Pluto by several light years, and then finding a particle of dust no larger than what you might find on a window seal. If you had a microscope that could magnify infinitely, you would find that single particle of dust was our entire observable universe.
In other words, or observable universe is a single dust particle, millions of light years from anywhere in the middle of empty space. Our solar system is an atom, galaxies are molecules and the sum is a particle of dust.

Mike - USA

24297

Answer

Thanks for your ideas about the atoms and the Universe. These are known as "thought experiments" that can't really be proven but can be thought out logically. Einstein used thought experiments to come up with his Theory of Relativity.

I am not trying to disprove anything with the ideas about the atom as a solar system. Instead, I'm speculating on the possibilities.

However, keep up with the philosophical thoughts.

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Pressure needed to make CO2 a liquid

Topic: Dry Ice

Question

November 13, 2013

I just have one question about dry ice. How much pressure has to be applied till the CO2 comes out as a liquid instead of a gas?

Adam - USA

24186

Answer

The chart on Dry Ice is Solid Carbon Dioxide shows that at pressures above 5 atmospheres CO2 changes to a liquid, as long as the temperature is above -51 degrees C.

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Why do gases expand uniformly?

Topic: Changing States of Matter

Question

September 30, 2013

why do gases expand uniformly?

francis bruno - Malawi

24067

Answer

A gas consists of a very large number atoms or molecules moving about in random motion. On the average, about the same number of particles are moving in all outward directions, causing the uniform expansion of the gas.

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How can I attend the school?

Topic: Changing States of Matter

Question

September 22, 2013

How will i be able to attend the school as far i am in Ghana?

Kenneth - Ghana

24042

Answer

The website provides lessons in various subjects to help your understanding in your studies. It also encourages that you do your best and become a champion in what you do.

There is no attendance or grades. But you can access the website when you need certain information.

Best wishes for success in your studies.

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What is the level of the school?

Topic: Changing States of Matter

Question

September 22, 2013

I also want to ask that, is the school a secondary level? So that if i want to attend it, how i will .

Kenneth - Ghana

24039

Answer

The School for Champions has lessons for high school and college students, as well as those in a professional career.

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