Table of Contents
What stays the same when a substance changes state?
The particles in a substance stay the same when it changes state – only their closeness, arrangement or motion change.
What are the properties of Bose-Einstein condensate?
The most obvious property of a BEC is that a large fraction of its particles occupy the same, namely the lowest, energy state. In atomic condensates this can be confirmed by measuring the velocity distribution of the atoms in the gas.
Is there any change in mass when a substance changes its state explain with example?
When a substance changes its state , there will not be any change in the mass of substance . For example , if we change 100 grams of water (liquid) to ice(solid) , the mass of ice will be same i.e., 100 grams . This shows there is no change in the mass even if a substance changes its state.
What changes when the state of a substance changes from solid to liquid?
Melting is the change of state from a solid to a liquid.
How can you remove energy from matter?
How do you remove energy from matter? By lowering it’s temperature. Gases tend to expand.
What state of matter results super cooling and loss of energy?
Plasma is the state in which particles are in the Super energized and super excited state. Bose-Einstein condensate is formed when particles at low densities are cooled to super-low temperature like absolute zero (-273.5 degrees Celsius).
Who discovered plasma the 4th state of matter?
Sir William Crookes
The existence of “the fourth state of matter” was first identified by Sir William Crookes in 1879 , however, the term plasma was introduced by I. Langmuir in 1928 to describe the state of matter in the positive column of glow discharge tube [2].
Who achieved BEC?
Shortly thereafter, Wolfgang Ketterle also achieved a BEC in his laboratory at MIT. Today, scientists can produce condensates of much greater numbers of atoms that can last as long as three full minutes, and they continue to glean intriguing new insights into this unusual form of matter.
How do Bose-Einstein condensates become identical?
They become identical, from a physical point of view, and the whole group starts behaving as though it were a single atom. To make a Bose-Einstein condensate, you start with a cloud of diffuse gas. Many experiments start with atoms of rubidium. Then you cool it with lasers, using the beams to take energy away from the atoms.
What happens to the mass of a substance when it changes state?
The particles in a substance stay the same when it changes state – only their closeness, arrangement or motion change. This means that the mass of the substance stays the same.
What did Einstein mean when he said the total weight remains same?
Albert Einstein’s prediction that mass can be converted into energy has been experimentally validated by numerous nuclear experiments. A consequence of this is that the statement, “the total weight of a system remains the same” is more correctly only a very good approximation for all non nuclear changes.
What happens to the weight of atoms when they are rearranged?
If the number of atoms stays the same no matter how they are rearranged, then their total weight stays the same. In all physical and chemical changes, the total number of atoms remains the same, hence when substances interact with one another, combine or break apart, the total weight of the system remains the same.