Answer:Noble gases:
are highly reactive.
react only with other gases.
do not appear in the periodic table.
are not very reactive with other elements.
Explanation:Noble gases:
are highly reactive.
react only with other gases.
do not appear in the periodic table.
are not very reactive with other elements.
Answer is: The sum of the masses of protons and neutrons is 20.1797.
This element (neon) has atomic number (Z) 10, which means it has 10 protons and 10 electrons.
Atomic number (Z) is the number of protons, which is characteristic of a chemical element.
Atomic mass (A) is 20.1797.
Ar is relative atomic mass (the ratio of the average mass of atoms of a chemical element to one unified atomic mass unit) of an element .
The Radiations maybe and not being burned alive
Answer:
It's D.
Explanation:
The lines on the phase diagram represent combinations of pressures and temperatures at which two phases coexist in equilibrium
Answer:
a. chemical change
Explanation:
A chemical change can cause an odor, however a physical change cannot, and the use of thermal energy will only make an object colder, not give it an odor.
