Answer:
protons in the atom.
Explanation:
The identity of an element relies on the number of protons in its atom. This is called the atomic number. The atomic number is the basis of the periodic table of elements. Modern periodic law states that "the properties of elements are a periodic function of their atomic number".
Atomic number of atoms do not change and they are convieniently used in identifying an atom.
Answer: In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels
Explanation: In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In water waves, energy is transferred through the vibration of the water particles.
The subscripts tell you <em>how many atoms</em> of an element are in one formula unit of a compound.
If there is no subscript, there is only one atom of the element.
In one formula unit of Na₂PO₃F, there are
Two atoms of sodium (Na)
One atom of phosphorus (P)
Three atoms of oxygen (O)
One atom of fluorine (F)
Answer:
I would say an airport
Explanation:
why because it is ran by the government
It is a controlled experiment