Chem Flashcards
What atom model was associated with Neils Bohr’s atomic theory?
Planetary model
What atom model was associated with Dalton’s atomic theory?
Billiard Ball
What was Dalton’s atomic theory?
(1) Elements consist of indivisible small particles (atoms).
(2) All atoms of the same element are identical; different elements have different types of atom.
(3) Atoms can neither be created nor destroyed.
What atom model was associated with J.J. Thompson’s atomic theory?
Raisin Bun
What did J.J. Thomson discover?
Electrons
What did Ernest Rutherford discover?
The nucleus and proposed the existance of protons
What atom model was associated with Neils Bohr’s atomic theory?
Planetary Model
What did Neils Bohr propose?
That electrons move in circular orbits around the nucleus.
What did James Chadwick discover?
Neutrons! (Jimmy Neutron)
What atom model was associated with Schrodinger/de Broglie’s atomic theory?
Quantum model
What does the quantum model have thats special about electrons?
That electrons have distinct energy levels and the electron cloud.
What are the atoms proportions?
Nucleus (protons and neutrons) = most of the weight of the atom
Electrons = most of the volume of the atom
What are isotopes?
Atoms that have the same number of protons but a different number of neutrons
What is group 1 on the periodic table?
Alkali Metals
What is group 2 on the periodic table?
Alkaline Earth Metals
What is group 17 on the periodic table?
Halogens
What is group 18 on the periodic table
Noble (inert) Gases
What is special about each group?
They share similar chemical properties (reactivity) although intensity changes
What is special about periods on the periodic table?
They show a pattern in reactivity which changes from left to right
What does the group number indicate? (ignoring the “1” in groups 13-18)
How many electrons are in the outermost energy level (ignore transition metals)
What does the period number indicate?
How many levels of electrons there are (ignore transition metals)
What does isoelectronic mean?
2 or more atoms/ions with the same number of electrons
What are cations? How do we name them?
positively charged ions (lose electrons) METALS
Just add ION after the metal
What are anions? How do we name them?
negatively charged ions (gain electrons) NONMETALS
Add IDE after the nonmetal and then ION
