Chem Flashcards
(7 cards)
Who made the periodic table.
Dmitri Mendeleev
Which family has atoms with filled valence shells? What does this mean for their reactivity?
Noble gases, they are stable and low of reactivity.
Ionic
Metal and non metal
Covalent
Non metal and not metal
How are valence electrons related to chemical families.
They apply to the reactivity
Do nonmetals tend to gain electrons or lose electrons as they form ion?
They tend to gain electrons
Explain the difference between a physical and chemical change
A physical change is a change in matter in which the appearance may change, but no chemical bonds are broken or made, and known new substance is formed. A chemical change is a change in matter in which chemical bonds are broken or made and at least one new substance is formed. The difference is that a chemical change forms a new substance and a physical change does not.
