Element
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The atomic number of an element is equal to the number of protons contained in the atomic nucleus.
Mass in an object describes the amount of matter contained within the object.
A is a subset of the larger set. This means that every element in set A is also an element in the larger set.
The measure of the quantity of atomic kinetic energy contained in an object is called temperature. Temperature is a metric that defines the average kinetic energy of the particles within a substance. It provides an indication of how hot or cold an object is based on the movement of its atoms or molecules.
The total number of atoms contained in a 1,00 mole sample of helium is 6,022 140 857.10e23.