This video clip appears to show Israel dropping a chemical weapon over Gaza. It looks like the White Phosphorus they used on Lebanon 2006 (which the Israelis have admitted to after the war) and by the US army on Fallujah in Iraq.
White phosphorus is a colorless-to-yellow translucent wax-like substance with a pungent, garlic-like smell. The form used by the military ignites once it is exposed to oxygen, producing such heat that it bursts into a yellow flame and produces a dense white smoke. It can cause painful burn injuries to exposed human flesh.
White Phosphorous shells dropped on Falluja, Iraq 2004
Distinguishing White Phosphorus from Flares
Israel Using White Phosphorus On Lebanese Civilians
Also see this video for a closer look at the bombs dropped on Gaza:
Israel launches ground offensive in Gaza – 04 Jan 09
Or see the relevant part of the above video here
“Footage of Israeli helicopter firing what appears to be WP on the streets of Gaza.
Most countries in the civilised world have banned these weapons and have signed treaties like the Convention on Certain Conventional Weapons. One of the articles says that you can’t use this where civilians are present. However, Israel reserves the right to kill and burn civilians indiscriminately as they’re not a signatory.
It maybe classed as an incendiary weapon but the burns of this weapon are chemical in nature. If in contact with the substance, it will burn your flesh off to the bone until it stops burning. If you breathe the smoke, and you can’t get ventilation, your lungs will be eaten away and you die a horrible death.”