History
Who is the cause of the 2000 year death of chemistry?
Aristotle
If a substances half life is 2 years how long will it take for only 1/4 to be left?
4 years
Which of the three is the best conductor of electricity?
Metals
What is the most reactive family?
Halogens
Location of electrons in an atom
Electron cloud/orbitals
Who discovered the electron cloud?
20th century scientists
What decay is this symbol for: e0 -1
Beta Decay
Which of the three have properties of both?
Metalloids
What is grouping left to right?
Periods
Variant of an atom with a different number of neutrons
Isotope
Who discovered that atoms have a nucleus where most of the mass is located?
Thomson
What are the 3 types of decay?
Beta, Gamma, and Alpha
Which of the three is a terrible conductor of electricity?
Nonmetals
What is the organization on the periodic table that is up and down?
Families/groups
Negative atomic particle
Electron
Dalton's theory of the atom is compared to a _____
billiard ball
What is the mass of an object that is 5,835,721 g after 9 half lives?
11,397.8 g
Name 3 properties of metals
Malleable, Ductile, and has luster
Which family/group has a complete 8 valence electrons?
Noble Gasses
The building blocks of matter that is small and uncuttable
Atom
Who created the cherry pit model?
Rutherford
If there is 2 grams left of a substance with a half life of 19 years than how many years ago did it have 32 grams?
76 years
Which of the three are brittle and break easy?
Nonmetals
True or False: Transition metals are multivalent
True
The time is takes for half of an atom to decay and the other half to become stable
Half-Life