Q1: |
Describe the solid state if matter and give an example besides ice |
Lili |
6/1/2013 |
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Q2: |
what is a gesous state |
tanujachadolia |
27/5/2012 |
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Q3: |
if K,L etc are shells around the nucleus, then how s,p,d or f subshells are located in these? |
Asadali |
30/12/2010 |
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Q4: |
Why some compounds directly change to gas without being changing into liquid' |
Asadali |
29/12/2010 |
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Q5: |
experiment to show that gases expand on heating. |
ramesha |
10/11/2010 |
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Q6: |
two illustrations to show that heat is a type of motion. |
ramesha |
10/11/2010 |
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Q7: |
why LPG gas is in liquified state why not in gaseous state |
bhavika |
7/7/2010 |
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Q8: |
application of pressure in solid liquid and gas in daily life |
sourav agarwal |
13/5/2010 |
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Q9: |
name some substance which like water & paraffin wax can easily be found in its 3 staes (solid ,liquid & gas). |
kamalika dutta |
13/5/2010 |
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Q10: |
how can you decribe the shape of liquid in each container |
Jonah A. Bohol |
1/12/2009 |
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Q11: |
conversion of liquid LPG to gas state is a physical or chemical change? |
sai |
28/11/2009 |
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Q12: |
what is difference between liquid,solid&gas? |
sathya ram kumar |
17/11/2009 |
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Q13: |
An example of state of matter (iquid solid and gas) in the human body |
Elba |
6/10/2009 |
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Q14: |
is high KE a solid, liquid, gas, or plasma |
courtney |
5/5/2009 |
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Q15: |
what is the process of matter changing states solid to liquid to gas at the molecular level |
redet |
23/2/2009 |
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Q16: |
Is it true that if we eat bubble bum and cut an onion at the same time we will have no tears |
umesh |
20/2/2009 |
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Q17: |
In how many physical states, matter can be classified ? |
rakesh chabdra |
26/12/2008 |
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Q18: |
Describe the volume of each state of matter, if the matter is placed in a container |
ANGIE |
24/11/2008 |
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Q19: |
Describe the gas state of matter and give an example. Try to think of a different one than air and watervapor. |
Nhi |
28/10/2008 |
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Q20: |
Describe the solid state of matter and give an example besides ice. |
Nhi |
28/10/2008 |
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Q21: |
change state of matter |
hani |
19/10/2008 |
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Q22: |
how the solid form into gas? |
michael jones |
1/9/2008 |
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Q23: |
Hi can please tell me the physical state of matter in the sun? Is it liquid,gaseous,solid,etc?? I am confused! |
Aiswarya |
25/7/2008 |
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Sun is in gaseous and plasma state - in the outer layers it is the gases that are predominant in the core it is the plasma state - where atoms break up into ions due to intense pressure, heat and gravity |
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Q24: |
under ordinary conditions of temperature and pressure, the particles in a gas are? |
Julia |
20/5/2008 |
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Particles are in more or less random motion, and are normally greatly separated also will diffuse readily, spreading apart in order to homogeneously distribute itself throughout any container. |
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Q25: |
How do i change petroleum from liquid state to gaseous state? |
Chewenru |
16/4/2008 |
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Q26: |
What is CNG and LPG? |
Jack |
13/2/2008 |
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Compressed Natural Gas (CNG) is a substitute for gasoline (petrol), propane or diesel fuel. CNG is considered an environmentally clean alternative to those fuels. CNG is made by compressing purified natural gas which is mainly composed of methane (CH4)), by about 75% and is typically stored in hard containers. Liquefied petroleum gas (also called liquefied petroleum gas, liquid petroleum gas, LPG) is a mixture of hydrocarbon gases used as a fuel in heating appliances and vehicles. LPG is manufactured during the refining of crude oil. LPG is widely used as a "green" fuel for internal combustion engines as it decreases exhaust emissions.LPG mixes that are primarily propane, mixes that are primarily butane, and the more common, mixes including both propane (60%) and butane (40%). |
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Q27: |
Does fuel in gaseous stae cost more or in liquid state? |
Benedict |
24/1/2008 |
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Fuel in liquid state example gasoline costs more than fuel in gaseous state example CNG, LPG |
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Q28: |
do liquids change size? why or why not? |
k j |
6/12/2007 |
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I guess you are referring to shape, liquids take the shape of whatever container they are in but retain their volume, this shape changing characteristics of liquid is because their molecules are spaced far apart and mutual attraction is low, this makes them take the shape of any container they are put in whereas in case of solids the mutual force of attraction between molecules is high hence solids retain their shape. |
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Q29: |
What is solid to gaseous state called |
Srikanth |
25/11/2007 |
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Sublimation |
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Q30: |
How can I get these animation free? |
MUHAMMAD MUSLIM |
15/11/2007 |
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We are sorry but you will have to subscribe to view any animation, it is a small amount so why not try it ? |
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Q31: |
why do solid, liquid and gaseous water have different ability to store energy upon heating? what is different in these 3 states |
Amit Kumar |
12/9/2007 |
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It is based on bonds and increasing motion of molecules. Solids can absorb more energy than liquid or gases for example 1 kg of water will boil at 100 degree Celsius while a 1 kg of iron remains solid at that temperature, because iron has very closely packed atoms with strong bonds the energy supplied only makes them vibrate faster while those of water break their bonds and convert to vapor at the same temperature. |
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Q32: |
why is it that the molecules of gas is far from each other? |
david john |
7/8/2007 |
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In a gaseous state, the molecular speeds are much higher than other states so even if they collide they get separated from each other due to kinetic energy, this ensures that the inter-molecular distance remain large. In case of liquid, the speeds are much lower hence; they are attached to each other when they collide. Visualize this by a slow metal ball hitting a magnet as compared to high speed one, which has better chance of sticking? The slower one! |
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Q33: |
Gases have no definite shape or volume compared to solids and liquids. Why? |
nafi |
10/6/2007 |
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The molecules of the gases are far apart from each other and move independently, while those of a solid are held together due to strong attractive force giving them some structure. If the same gas is frozen to low temperatures its molecules lose energy and come nearer due to attraction to produce a shape, CO2 becomes a solid (called dry ice) at -78.5 deg C. It attains a shape. In its gaseous form, it takes the shape of its container. It has no volume either because of independent molecules. |
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Q34: |
Why does sugar dissolves quick in hot water than cold water???? |
Alfa |
26/5/2007 |
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In hot water the molecules of liquid water possess very high kinetic energy ( kinetic energy is linked to temperature) and when they collide with Sugar molecules they are easily able to break the chemical bonds, and the sugar dissolves in water, in cool water since the energy of H2O molecules is lesser a number of collisions are required before dissolution of sugar can take place. refer our concept of heat animation |
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Q35: |
Explain about Boyle's & Charle's law |
Manee |
4/5/2007 |
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Boyle’s law: if the quantity of an ideal gas is fixed then under the condition of constant temperature the product of its pressure and volume are constant or volume is inversely proportional to the pressure, as one increases another decreases. It is checked by changing volume and finding pressure. Charles law: if pressure is kept constant then change in volume is proportional to change in temperature in kelvins. So, if we cool a gas then we find its volume decreases and it expands on heating. |
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Q36: |
what are the properties of gas? |
Claudine |
6/3/2007 |
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There are many properties 1) Physical Properties: Molecular Weight, Compressibility / Expandability, volume (m3), density (kg/m3) (under constant pressure and temperature), melting and boiling point (in deg C), Specific gravity 2) Mechanical Properties: Bulk modulus (Gpa) and viscosity (Pa-s) and kinematics viscosity (m2/s). 3) Acoustic property like velocity of sound (in m/s) 4) Heat capacity at constant pressure and Volume (Cp, Cv), Thermal conductivity 5) Solubility in water. |
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Q37: |
how do i change a gaseous state to a liquid state |
chrisman1oo |
30/1/2007 |
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Vapor is either cooled or compressed by increasing pressure or a combination of both processes is used to condense it to a liquid. A simple experiment can be exhaling on a mirror or steel. Your hot breath meets cool surface of glass and condenses to form a thin film of liquid. Compression is also used for liquefying oxygen for industry purpose and hydrocarbons so that they can be used as fuel. I am not sure whether this answers your question, please let me know . |
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Q38: |
What is the change of state of matter of an egg turning from liquid to solid by BOILING? Can an egg turn to gas state? |
Liza |
8/10/2006 |
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A phase change is a change from one state (solid / liquid / gas) to another without “a change in chemical composition”. When boiling an egg, the proteins bonds change coagulate as heating “changes the protein bonds”, thus the chemical composition of egg changes hence being irreversible it is not a phase change. Contrary to that melting of ice or wax to a liquid is a reversible process. Not only egg any organic matter can be directly vaporized, when suddenly put in high temperatures. |
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Q39: |
why does liquids change to gaseous on heating? |
menaka |
30/9/2006 |
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In the liquid state the molecules are closely bound to each other by attractive forces and move much slower as compared to gas, as heating proceeds the energy supplied to bonds breaks them and the speed of molecules keeps on increasing till they become free of each other and spread out to occupy a larger volume this is the gaseous state. |
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Q40: |
How can you prove that solids have defenit volume? |
menaka |
30/9/2006 |
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Keep a solid in empty containers having different sizes or volumes, check the volume (or density) of solid after each placement. You will find it is the same. For measuring the density use the liquid displacement found in most 8 th grade books or on our site. |
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Q41: |
what is the difference between balanced & un balanced chemical equation? |
menaka |
30/9/2006 |
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A balanced equation is like a cooking recipe with quantity of reactants spelled out clearly on the left side and that of products on the right hand side. The total mass of reactants must equal the total mass of products. An unbalanced one gives the identity of the reactants and products with the formulas (as well as the operating conditions of temperature, physical state and pressure) but does not give the quantities involved. H2 + O2 --> H2O instead of balanced 2H2 + O2 --> 2H2O |
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Q42: |
why are solids hard ? |
menaka |
27/9/2006 |
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In solids the atoms are tightly bound together by bonds, this gives a rigidity to the structure, the close packing of atoms in a small volume ensures that solids are hard. |
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Q43: |
When I blow up a tyre, i am forcing more air into the tyre. Will the pressure in the tyre increase or decrease? Why? |
Lam |
16/9/2006 |
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Increase, pressure at molecular level is the collision between molecules and the tyre. More molecules of air being introduced mean more collisions and higher pressure |
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Q44: |
Why do the railway lines have to be laid with gaps between the rails? |
EL |
16/9/2006 |
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To provide for expansion due to heat, refer our effects of thermal expansion animation |
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Q45: |
Why do the particles move faster when the temerature increase? |
Lam |
6/9/2006 |
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Particles move faster when energy input to the system increases, this in turn increases the average kinetic energy of the particles and is reflected in enhanced translatory, vibratory and rotational motion of the particles, temperature is a measure of this increase not the cause. |
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Q46: |
we want more information |
sankeerth |
6/7/2006 |
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You can refer to "Matter" or "Physical properties of matter" on our site |
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Q47: |
please if you have animation about the thermal conductivity or thermal diffusivity |
anan hayek |
6/7/2006 |
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Yes we have, check "Conductivity of materials" under Physics>Heat>Properties or go to this link http://www.goalfinder.com/product.asp?productid=61 |
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Q48: |
describe an experiment to show that gases expand when heated |
yvonne |
4/7/2006 |
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Take a dry and empty plastic water bottle and place the plastic screw cap inverted on the rim so that it covers the opening of the bottle completely. Now carefully put the base of bottle in a saucer or vessel containing hot (but not boiling water), the cap will starts vibrating before falling off. Be careful when handling hot water. |
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Q49: |
what is solid state of matter? |
nashri |
9/3/2006 |
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It is a phase of matter that is characterized by resistance to change - to volume and to deformation by pressure. It represents crystalline states where orderly arrangement of atoms are there and amorphous states where disorderly but rigid structures exist. |
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