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some are left I'll answer them later and 9 I didn't understood please write it properly
Answer:
1.When thermal energy is added to a substance, its temperature increases, which can change its state from solid to liquid (melting), liquid to gas (vaporization), or solid to gas (sublimation). ... Decreasing pressure can cause it to vaporize. For some types of rock, decreasing pressure can also cause them to melt.
2. if you heat a gas you give the molecules more energy so the more faster this means the impacts on the walls of container and an increase in pressure conversion if you call the molecules down they will slow and the pressure will be decreased
3.Bulk phenomenon: The process which involves total molecules including interior molecules along with surface molecules is called as bulk phenomenon. Example: Boiling of any liquid. When compared with evaporation it involves only surface molecules, so evaporation is considered as surface phenomenon but not as bulk phenomenon.
4.Evaporation is a surface phenomenon because it occurs in the surface. For example when we put wet clothes for drying we spread them out so that the surface area gets increased. When the surface area increases the water will get enough space to get into vapour stage and thus evaporation happens easily. This is why increase in surface area is a factor of evaporation
5.Hi friend....
When Evaporation occurs it absorbs all the heat from the surrounding and hence. Evaporation causes cooling.
Some examples are as follows:
- when tea is poured into a saucer when it is very hot it is exposed to a large area and causes evaporation n the tea becomes cool.
- In summer seasons the water gets cool in a earthen pot because it has fine pores in it through which water seeps out gets evaporated .
- when we sweat n sit under a fan we feel cool .
- doctors advice patients with fever to keep a wet on their fore head.
- A wet khus khus screen hung at the door of the room keeps the room cool.
6.Hi friend....
The temperature of any substance remain constant during the change of state because the heat energy supplied is used up in changing the state of matter and also this heat is used for breaking of several bonds or attractive forces.This heat, which does not raise the temperature of the body, is called Laten heat.
7.n general, the volume of liquid is more than the volume of solid as the particles of liquids are more free to move thereby more volume. But in case of ice, density of water is maximum at $$4^\circ C$$. The density of ice is less than that of water. Therefore it floats on water.
8.Opposing concepts in cell theory: history and background. The cell was first discovered by Robert Hooke in 1665 using a microscope. The first cell theory is credited to the work of Theodor Schwann and Matthias Jakob Schleiden in the 1830
Definition of cell theory. : a theory in biology that includes one or both of the statements that the cell is the fundamental structural and functional unit of living matter and that the organism is composed of autonomous cells with its properties being the sum of those of its cells.
9. There are over 200 different cell types in the human body. Each type of cells is specialised to carry out a particular function, either solely, but usually by forming a particular tissueStem cells
Red blood cells
White blood cells
Nerve cells
Neuroglial cells
Muscle cells