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If matter is made up of two or more elements and has the same ratio of atoms no matter the amount of the substance it is a compound.
To answer this, we simply need to consider the lightest of the chemical elements, hydrogen. Hydrogen's atomic number, and thus its number of protons and electrons, is 1. So, by necessity, that is the minimum amount of valence electrons an atom can have.
Ye.. the concentration of a substance is measured as the amount of substance per unit volume. Accordingly, the amount of a substance in per unit volume is the concentration of the substance.
No, on the contrary: it contais the maximum amount of solute (in the minimum amount of solvent)
Density is simply the mass divided by volume. This means that it is the amount of the substance in a specific unit of space. Because a pure substance indicates that it is exactly that, a substance made of a specific combination of elements, it will always have the same density because those elements can only take one form in order for it to be pure.
If matter is made up of two or more elements and has the same ratio of atoms no matter the amount of the substance it is a compound.
Molecules are pure substances that are made up of two or more atoms of one or more elements linked together by shared electrons. Molecules are also found in elements and compounds. One sheet of graphene is a very small amount, which can not be seen (or 1 atom thick) A compound is also a pure substance and is made up of atoms of two or more elements that are chemically combined. When a compound forms, elements join in a particullar ratio according to their masses. (example: water-1g in hydrogen: 8g in oxygen)
The field of Analytical Chemistry allows you to determine what elements are in a substance. Qualitative analysis identifies which elements are present, while quantitative analysis determines the numerical amount or concentration of each of these elements. There are many ways to perform these tests.
The enthalpy of formation of a substance is the amount of energy that was put in or evolved from the making of that substance from the individual elements.
To answer this, we simply need to consider the lightest of the chemical elements, hydrogen. Hydrogen's atomic number, and thus its number of protons and electrons, is 1. So, by necessity, that is the minimum amount of valence electrons an atom can have.
A formula unit can also be referred to a mole unit. A mole or formula unit is the smallest amount of a substance that contains all the atoms or elements of a substance.
The amount of material in a substance is mass.
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Ye.. the concentration of a substance is measured as the amount of substance per unit volume. Accordingly, the amount of a substance in per unit volume is the concentration of the substance.
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No change: Density is a property of the substance (physical property), which is not changed by the amount of substance.
He did the minimum amount of work possible.Most people want the minimum amount of yard work possible.