molecules
An element occur in nature as a pure element or as a compound.
Sulfur does. It appears in the form of a compound with oxygen: sulfur dioxide.
The concentration is related to the volume of the atmosphere and the amount of the element your looking at.Molarity(concentration)= G/(Molecular weight)x Liters(volume)
In a single-replacment reaction, atoms of an element replace atoms of another element in a compound. In a double-replacement reaction, two positive ions trade places between different ionic compounds.
Compound, no group 2 or group 1 (except H if its considered) exist in elemental form naturally.
A Lipid is insoluble. Aka a fatty acid.
Any substance or compound cannot be physically separated. The broad term for this is simply "substance".
molecules
what she described compound element
what she described compound element
Element.
since steam is the gaseous form of water and water is a compound (components can't be physically separated), steam is also a compound.
An element is an element and can not, in anyway, be separated.
Compound separated is hard to do but is call an element
This is an alloy and a homogeneous mixture.
What are the components of solutions?
Solid silicon dioxide is not considered a compound or homogeneous mixture. It is considered a heterogeneous mixture because it contains traces of visible components that can be separated physically.