They contain atoms including nucleus proton electron and neutron
Portion control is controlling the amount of food you eat. It is important because your body needs a certain amount of vitamins and protein.
The molecular formula tell us what elements the atoms are, and how many moles and atoms are attributed toward each element.
The molecular model tells us how the atoms/elements are bonded together.
Molecular formula : CH4
H
l
Molecular model: H -- C -- H
l
<span> H</span>
Explanation:
Fe2o3+ 3co ---------. 2fe + 3co2
