Chapter 2- Structure Of Matter Flashcards
Who described the structure of an atom with the “hook-&-eye” theory?
Dalton
What is a valence number ?
The number of electrons in its outer most shell.
What did Dmitri Mendeleev show ?
If elements were arranged in order of increasing atomic mass, there would be a repeat in chemical properties.
How did Thomson describe the atom?
Like plum pudding
What did Ernest Rutherford do ?
Disapproved Thomson model and introduced the nuclear model.
What is Bohr atom
Compared atom to a mini solar system, electrons revolved around nucleus
What charges does a electron, proton, neutron have ?
Electron- negative charge
Proton- positive charge
Neutron- neutral charge
What are the energy shells labeled through and what is the equation to determine max number each shell can have ?
K-Q
2n2
What shell is the binding energy the weaker and greatest
Weakest- Q
Greatest- K
What is octet configuration
No outer shell can contain more than 8 electrons
What letters is the atomic number and atomic mass number represent ?
Atomic number- Z
Atomic mass number- A
What is the atomic number and atomic mass
Atomic number is the number of protons
Atomic mass number is the number of protons and neutrons
What are isotopes, isobars, isotopes, and isomers
Isotopes- atoms with the same z but different a
Isobars- atoms with the same a but different z
Isotopes- atoms with the same number of neutrons but different number of protons
Isomers- same a and same z
What is covalent bonding
Sharing of outer electrons
Iconic bonding
Giving up or receiving extra electrons
