The more the molecules of a substance move, the more  true or false?
86034
neither true or false...
971583
Generally, atoms of a substance vibrate in their positions. Temperature of a substance is directly related to this vibration velocity.
1054528
The AVERAGE kinetic energy of the atoms/molecules an object is composed of.
1151400
simply put: the higher the concentration the faster the reaction rate. in equilibrium the higher concentration shifts the reaction t o the other side.
828588
Both points expressed above are true. A molecule of Hg is indeed heavier that a molecule of air. \n\nBut to say that comparing density will tell how molecular weight compares will not always be true. Density is weight (or mass, it's expressed both ways) per volume so it could be that the density difference is because of how close together the molecules are. \n\nExample: Argon (atomic weight - almost 40) is a gas in normal conditions. It's less dense than water (molecular weight - about 18).
253918
Molecules are made of atoms
72779
A molecule is made up of atoms.
427727
Material objects (solid, liquid or gas) are made up of particles called molecules.   (Molecules are in turn made up of atoms, with one or more atoms per molecule).  These molecules are in constant motion, vibrating, rotating and translating (moving in a straight line).  Temperature is the mean kinetic energy (energy of motion) of the molecules making up an object.  Molecules don't all have the same kinetic energy, it's distributed randomly among them.\n\nWhen molecules collide (as they do constantly) they transfer kinetic energy.  When two systems of molecules come into contact, the molecules of the two systems collide and exchange kinetic energy.  The mean kinetic energies of the two systems even out: if one is colder than the other (lower mean kinetic energy) it becomes warmer (higher mean kinetic energy); if one is warmer it becomes colder.  \n\nWhen a clinical thermometer (or any thermometer) comes into contact with a warm object (a patient) the kinetic energy of the molecules of the thermometer warm up to match those of the warm object (since the patient is quite large & generates its own heat, the decrease in the patient's temperature is very small).  The thermometer typically has some liquid subsance (mercury, alcohol, ...) that expands when it warms, as molecules moving faster take up more space (bounce into each other harder, push each other further away).  So the "reading" of the thermometer goes up as the liquid within the thermometer expands.
963196
Many molecules have a lot more than two. You just have to keep counting. Don't forget the green ones.
955519
The density of a solid or liquid is determined by the various kinds of intermolecular bonds, see the reference.  These bonds tend to attract a molecule to its neighbors.  The molecules tend to keep getting closer until the electrostatic repulsion between the positively charged nuclei equals the attraction.\n\nAs you increase the temperature, nothing changes within a molecule, the molecules just move more.  In a solid, they generally stay in place and vibrate with respect to their neighbors.  The repulsive force is inverse square with distance, so as molecules get closer, the repulsive force increases rapidly.  Thus, the vibrations involve more movement away from the neighbors than toward the neighbors.  That's why the average distance between molecules increases with temperature.\n\nRarely, other factors dominate.  As water cools, it contracts until it reaches about 39 degrees F, and then starts expanding.
917266
No.   A study was done by a japanese physicist that proved that the actual molecular structure of water changes as a reaction to the emotional environment around it.  \n\nFor example, a happy environment causes the molecules to form beautiful snowflake-like shapes.  While, an angry environment will cause it to look very jagged and forboding.   \n\nI know that sounds pretty crazy, but there's proof of it.  And nobody knows why that is.
649470
If you consider "pressure" as the force of molecules striking the surface and the molecules are randomly moving about, then they will strike all surfaces equally.  Since gas molecules are very free in their motion, they quickly react to equilize any changes in the system.  So if temperature rises, the molecules move faster, strike the walls harder and pressure rises.
785758
Any mass of gas has temperature T. That means that the gas molecules have average kinetic energy of E=E1=m1*v1^2/2=E2=m2*v^2/2 no matter what molecules are present in compound.\nThus E1/E2=1=(m1*v1^2)/(m2*v2^2) or v1/v2=sqrt(m2/m1)=sqrt(13/12)=1.04; hence the ‘lighter’ would move 4% faster than ‘heavier’.\nTo be more particular you have to consider rotation of molecules and their thermal capacities, but these effects are not substantial in our case.
815552
It's all about quantum mechanics. Molecules can have a temporarially set speed at which they rotate, expand and contract, or move, but they can not go just a little bit slower or a little bit faster, their speeds are constant unless there is not enough energy to stay at a speed, or enough to "jump" speeds. I believe Philip Ball can describe it best:\n\nWhen a molecule absorbs light, it's energy increases- it gets "hotter," by which I mean that the molecule may shake, jiggle, or spin more vigorously. It is then said to have been "excited" by absorption. The reason why molecules absorb photons of light at some frequencies but not at others is that their motions are determined by the rules of  quantum mechanics, which place restrictions on which motions are allowed. We saw in chapter one (My note: I'm typing this straight from the book, but I can't show all of chapter one) that the electrons in atoms and molecules are not free to adopt any old orbit around the nuclei, with correspondingly arbitrary energies; instead, they are confined to a ladder of specific energy levels, with the energies in between the rungs being forbidden. The electronic energy levels are said to be quantized. In the same way, the energies of the motions that the molecules execute in space may also be quantized. The two-atom oxegyn molecule O2 for example, both rotates (tumbles end over end) and vibrates (the bond between the two atoms stretching and contracting) in free space. The energies associated with these motions may take only certain values, forming a ladder of energy levels like those for the electron energies. As the energies of rotation and vibration depend respectively on the speed of rotation (the number of revolutions per second, say) and the frequency of vibration (the number of in-and-out oscillations per second), the latter two quantities are quantized too. The o2 molecule, terefore, can vibrate only at specific frequencies and spin only at specific speeds. \n\nPhew, that was alot of typing! Yes, I did get that straight out of the book, I didn't copy-paste. He then goes on to explain how the larger an object is, the colser the energy levels are, so there is no real "forbidden zone", and therefore the object can accelerate gradually.\n\nEdit : Sorry about the typos, I'll pick them out as I find them.
505249
no.its the force produced due to the movement of other particles(electrons).so..
1089808
Grab your textbook or go to wikipedia.\n\nSee:\n\n1. Random Molecular Motion\n2. Diffusion\n\nThe simple answer is that atoms and molecules move constantly because they have energy, the amount of energy something has can be measured, in your example through heat. The less energy something has, the slower it will move and conversely the more energy something has the faster it will move. This is random molecular motion.\n\nDiffusion is the motion of these molecules from areas of abundance to areas scarcity. Molecules will diffuse until they are evenly distributed throughout a solution. Too illustrate this try to think of the molecules as marbles in a box, in the beginning they are all bunched up in one corner, but if you start to shake the box they will begin to bump against one another, at first rapidly because they are all bunched up. As time goes on they will spread out until they fill the entire box and are bumping up against each other at a rate that keeps them as evenly spread out as the box allows. The amount of energy you apply to the shaking will cause them to move faster or slower, or in your example, cold water will make the food coloring distribute slower and hot water will make them distribute faster.
125174
It's not about which is finer, it's about chemistry and attraction between molecules, I would say salt dissolves better