Anions (negative ions) and cations (positive ions).
All rocks contain minerals, those solid, crystalline, inorganic, naturally occurring thingies that have their very own chemical formulas.
An electric fan is not a chemical category at all, but an article of manufacture that can contain many chemical compounds and/or elements.
No. I'm pretty sure it covers a quarter of the world's vegetation and animal species
Sodium chloride (NaCl) contain sodium and chlorine.
Yes. All chemical compounds, ionic and covalent, contain 2 or more elements.
It's not so much that as all acid are electrolytes, though most are weak electrolytes.
All foods contain some electrolytes (potassium, sodium etc...). It's almost impossible to find a food without them in.
Mammals contain 3 fourths of all species
Chemicals? There are many kinds of chemical fertilizer and they all contain different ingredients.
all chemical compounds contain molecules
Almost any liquid object has ions to be electrically conductive, or has elecrolytes
Most salt dissolve in water, then they're electrolytes by forming ions in solution.
The majority of foods contain chemical additives.
The periodic table contain all the chemical elements.
As all the chemical elements neptunium contain protons, neutrons and electrons.
Organic chemical compounds
Chemical elements doesn't contain proteins.