Answer:
Convection currents create the movement of Earth's tectonic plates in the magma.
Explanation:
Heat from the core and the mantle itself causes convection currents in the mantle. This flow, called mantle (magma) convection, is an important method of heat transport within the Earth. Mantle (magma) convection is the driving mechanism for plate tectonics
The presence of hydrogen bonding between molecules of a substance indicates that the molecules are polar. This means the molecules will be soluble in a polar solvent such as water. Some examples of polar molecules which can hydrogen bond are ammonia
Answer: Chemical
Explanation:
The reaction of destroying is a chemical change in the ozone molecules.
Answer:
Explanation:
a ) false.
NH₃ is more polar molecule than PH₃ so inter-molucular attraction is greater in NH₃ ( hydrogen bond ) . Hence vapour pressure is low for NH₃ .
b ) false .
The average kinetic energy of boiling water molecules is lower on a mountaintop than it is at sea level. It is so because water boils at lower temperture on mountain and kinetic energy of molecules depends upon temperature .
c ) false
vapour pressure depends upon temperature .
d ) True
CCl4 is more volatile than CBr4
e ) false
vapour pressure increases as temperature increases.