Noun
- The basic structural component of the universe. Matter always consists of a mass and a volume, and contains its mass times the speed of light squared in total energy stored.
- A kind of substance.
- :vegetable matter
- A reason for concern; being amiss.
- :What's the matter?
- A situation.
Verb
- : Be important.
- :The only thing that matters to Jim is being rich.
Read full definition at wiktionary.org
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...The term matter traditionally refers to the substance that all objects are made of.One common way to identify this "substance" is through its physical properties; a common definition of matter is anything that has mass and occupies a volume. However, this definition has to be revised in light of quantum mechanics, where the concept of "having mass", and "occupying space" are not as well-defined as in everyday life. A more general view is that bodies are made of several substances, and the properties of matter (among them, mass and volume) are determined not only by the substances themselves, but by how they interact. In other words, matter is made up of interacting "building blocks", Read full entry
This entry is from Wikipedia,the leading user-contributed encyclopedia.It may not have been reviewed by professional editors(See full disclaimer)
- 1.Matter - Wikipedia, the free encyclopedia
- In common usage, matter is anything that has both mass and volume (takes up space) ... In everyday human environments, matter is closely related to (and in many ...
- http://en.wikipedia.org/wiki/M
atter
- 2.Chem4Kids.com: Matter
- Chem4Kids.com! The web site that teaches the basics of chemistry to everyone! ... Matter is also related to light and electromagnetic radiation. ...
- http://www.chem4kids.com/files
/matter_intro.html
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Matter????
How can I make a concept map
with the terms: matter,
substances, elements,
compounds, mixtures, atoms,
and molecules? I began with
matter and made two groups one
with substances and the other
with mixtures. What do I do
next? Give me the right answer
and i will vote you for best
answer.
Please Help
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Matter is everything on your list. Matter can be split into substances and mixtures. Substances can be split into elements and compounds. Molecules can be elements (oxygen gas, O2) or compounds (carbon dioxide, CO2). All matter is made of atoms. |
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What is the difference between I've allways wondered if Dark
Matter and Antimatter were
close together because Dark
matter can't been seen and I
would think that antimatter
couldn't be seen either.
Seeing as antimatter is the
opposite of regular matter.
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They are very different things! Anti-matter has the same properties as ordinary matter except that the charges of the basic particles are flipped. For example, an electron is negatively charged, so the anti-matter particle for the electron is positively charged. It is called a positron. There are other, more subtle changes, so the anti-neutron is not the same as a neutron (although both are electrically neutral). There is a collective term for heavier particles like protons and neutrons which are made out of quarks. They are called baryons. Anti-matter is ultimately made out of quarks also, so is baryonic. Because anti-matter has charges, it interacts with light (electromagnetic waves) in essentially the same way as matter does. So, large quantities of anti-matter would be visible. Anti-carbon, for example, would have the same density as ordinary carbon and would be black (assuming it was anti-graphite). Also, anti-matter interacts very strongly with ordinary matter. So strongly, in fact, that the two destroy each other: their mass is converted into energy when they meet. Dark matter is very different. At this point, we only know about it from its gravitational effects: how it affects orbits of stars in galaxies, or how it bends light around galaxies. We know that it, unlike anti-matter, does not interact strongly with light. That is why it is invisible. We also know that dark matter is not baryonic, so it is not made from quarks at all. At this time we don't know what dark matter is made from, although there is a lot of speculation. The best guesses at this point all suggest that dark matter is like a heavy analog of a neutrino, which only interacts with ordinary matter through the weak force and gravity, not the electromagnetic force. In particular, dark matter does not destroy ordinary matter like anti-matter does. |
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How much matter and antimatter The energy to accelerate a
starship comes from combining
matter and antimatter. When
this is done the total rest
energy of the matter and
antimatter is converted to
other forms of energy. Suppose
a starship with a mass of
2.5x10^5 kg accelerates to
0.5380c. How much matter and
antimatter must be converted
to kinetic energy for this to
occur?
the answer is 4.7 x 10^4
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Ignoring the relativistic mass increase of the starship, the final kinetic energy of the starship is Ek = (1/2)mv^2 = (1/2)*(2.5*10^5)*(.538*3*10^8) ^2 and the total mass of matter and antimatter required is m = Ek/(c^2) The mass of antimatter required would be the same as the mass of matter so each would be half of the total mass you calculate. If you -do- need to take into account relativistic mass increase, it's given by m = m0/(sqrt(1-(v/c)^2)) where m is relativistic mass, m0 is rest mass, v is velocity, and c is 3*10^8 . HTH, Doug |
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