Remembering the periodic table, Fe is iron and O is oxygen. The elements that combine to create rust are iron and oxygen, with the chemical compound being (Iron)2(Oxygen)3.
What the question there is nun
Answer:
80 N
Explanation:
you can multiple
force equal to mass x gravity
1) A. the have different protons.
The number of protons is the atomic number and this is how the products are ordered in the periodic table. Every element has different atomic number.
2) A. 8 p, 8 e and 8 n
The atomic number of O is 8, which means it has 8 protons. The number of protons must equal the number of electrons.
3) C. atoms bond with one another in a molecule.
That is what a molecule is: a group ot atoms bonded.
4) D. the bond results from the attractive forces of two opposite charges.
Ionic bonds are formed between ions, a positive ion (cation) and a negative ion (anion).
5) A. the physical and chemical properties of HCl are different from those of H2 and Cl2
You can check physical properties (density for example) and chemical properties (how they react with other elements) in some tables o textbooks.
