Aluminum is an element. If there's nothing else in the foil
besides aluminum, then the foil is entirely an element.
The Nuremberg War Crimes trials established the international legal precedent that individuals who violate human rights can be held responsible for their actions. The correct option in regards to all the options given in the question is option "2".
The Nuremberg trials were held
against the Germans by the Allied forces against the war crimes done by the
Germans during World War II. Many of the allied countries were in favor of
killing the war criminals before any trial, but ultimately the trial was held
and the criminals were either hanged to death of were killed by the firing
squad.
The answer is 3). This is because elements are the simplest form of a substance, and cannot be broken down any further. Compounds on the other hand are much more complex than elements and can be broken down INTO elements.
For example, Na, sodium, is an element and cannot be broken down further. H2O, water, is a compound and can be broken down into Hydrogen and Oxygen.
Explanation:
According to the law of the conservation of mass, 'mass is conserved in a chemical reaction. The mass cannot be created nor be destroyed in a chemical process'.
This law holds true for the burning of wood also. Although the wood burns to produce ash which weighs less than wood but also, it produces some soot and other gases and the sum of the masses of all these is equal to the sum of the masses of wood and oxygen that reacted with it.
