Which best describes the electrons of the atoms of a pure metal? a
All electrons of a given atom are attached to its nucleus.
b
All electrons in the metal are mobile.
С
Inner shell electrons are mobile.
D
All of the valence electrons are mobile throughout the metal.

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

How do you know when a chemical reaction has occurred