What increases from left to right in the periodic table ? (Give examples).

Elements on the left side of the periodic table have low ionization energies because of their willingness to lose electrons and become cations. Thus, ionization energy increases from left to right on the periodic table

for example

1) from left to right across a period of elements electronegativity increases

2) from top to bottom down a group electronegativity decreases

3) important exceptions of the above rules includes the nobles gases lanthanides and actinides

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me