Chemistry
What is Chemistry the study of?
Matter
What type of a charge does a proton have?
Positive
How are elements placed on the periodic table? What determines where they are found?
the atomic number
How many letters can the chemical symbol contain?
1 or 2
Which group is used in fireworks?
Alkaline earth metals
What is matter?
Anything that has mass or volume
What is the charge on the nucleus of an atom?
positive
How many groups are on the periodic table?
18
How do you determine the number of neutrons in any stable atom?
Atomic mass (p + n) - atomic number (p)
Which group contains "the bullies"?
Halogens
The word atom is derived from the Greek term "atomos". What does this term mean?
"uncuttable", cannot be divided any more, "indivisible"
Which subatomic particle has the most mass?
neutron
How many periods are on the periodic table?
7
Which metalloid is the most valuable semiconductor in the computer chip industry?
Silicon
What is the common phase of most metals?
solid
Who discovered that the atom had a positive nucleus using evidence from the famous "Gold Foil" experiment?
Rutherford
protons and electrons
Which elements are located to the right of the metalloids?
nonmetals
What group has the most elements?
Transition metals/ group 3-12
Which group contains all nonmetals and poisons?
Halogens
Who developed the "Plum Pudding" model of the atom?
JJ Thomson
How many "electron shells" (energy levels) will an atom of K have?
4
Which group of elements needs 2 electrons to reach a stable octet?
Group 16. (Oxygen group)
Where are the "transition metals" located? (In which families)
3-12 (families or groups)
How many groups are REACTIVE
17