The Earth's core, as far as me know, is made almost entirely out of iron, with a sprinkling of Nickel. The Magma layer, is also made almost entirely of iron, but a few more sprinklings of other things (btw, the magma is liquid/ melted). As for the crust, there is a ton of most known metallic elements.
Interesting question with no single answer as such. The most common (most abundant) compound found in the earth's crustis Silicon Dioxide SiO2 (sand, glass, quartz) and from this the most abundant element in the earth's crust is Oxygen and the second most abundant element is Silicon. However quartz is not the most abundant mineral in the Earth's crust which is actually feldspar.
There are also huge amounts of Iron present in the crust (and and the earth's core is assumed to be composed mostly of Iron too. Nearly all of the elements in the Periodic Table are found in/on the earth and/or in its atmosphere in greater or lesser amounts in one form or another.
no they are compound mixture
It is not a mixture but a compound of hydrogen and oxygen. We call this compound water.
It is a homogenous mixture
electricity is not a compound, mixture or element.
mixture
Water is a compound
It is a mixture.
The composition of air is practically the same at the level of earth.
The Earth's atmosphere is considered a mixture. It is composed of a combination of different gases such as nitrogen, oxygen, carbon dioxide, and others.
Is gasoline a element a mixture or a compound
its a heterogeneous mixture
Concrete is a mixture not a compound.
no they are compound mixture
It is a compound mixture.
It is not a mixture but a compound of hydrogen and oxygen. We call this compound water.
It is a homogenous mixture
Magnesium oxide (MgO), also known as magnesia, is the second most abundant compound in the earth's crust. So,it is a compound.