Iron Filing reacts with Oxygen, Name the product(s )of this reaction * 1.Iron Dioxide
2.Iron Chloride
3.Iron oxide and Hydrogen gas
4.Iron oxide only

2.Sara forgot her metallic ring in a cup of water the ring survived (did Not react). What are the metals that form her ring? *

1.Iron - Lead - Zinc
2.calcium - magnesium - Barium
3.potassium -sodium - lithium
4.gold - silver- copper

1.iron oxide

2

1.iron lead zinc

2)calcium barium magnesium

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

answer; i believe that the correct answer is (a) potassium(k)