Geocentric-Ptolemy, Aristotle
Heliocentric- Copernicus, Galileo, heliocentric
Answer:
The large relative distances between particles in a gas means that there is considerable empty space between the particles.
The assumption that particles in a gas are relatively far apart explains gas compressibility.
Compressibility is a measure of how much the volume of matter decreases under pressure.
Energy is released by a gas when it is compressed
Explanation:
The kinetic molecular theory establishes that gases are composed of molecules. These molecules of gas are far apart from each other hence there is a considerable empty space between the gas molecules. As a result of these empty spaces between gas molecules, it is possible to compress a gas.
Compressibility is defined as a measure of how much the volume of matter decreases under pressure. When a gas is compressed, work is done on the gas and energy is evolved hence the gas heats up.
Answer is b..............…
Answer:
Chemical properties of acids are the following.
1) Acids have pH lower than neutral i. e. 0 to 6.
2) Acids have sour taste.
3) It changes the color of indicator from blue litmus to red.
4) When the acid react with base forming salt and water.
5) When acid react with metals it produces hydrogen gas.
6) Acid have the ability to corode metals.
