click below
click below
Normal Size Small Size show me how
chemistry
periodicity quiz, names and stuff
| Question | Answer |
|---|---|
| group 1A name | alkali metals |
| group 1A characteristics | low density, low melting points, good electrical conductivity, soft enough to be cut with a knife, react violently with cold water to form metal hydroxide and hydrogen gas |
| group 2A-6A name | alkaline earth metals |
| group 2A characteristics | not as reactive as 1A, harder than 1A |
| group 3A characteristics | metals and non metals, Boron: non-metal; rest are metals |
| group 4A | metals and non metals, Carbon: non-metal, Silicon and Germanium: metalloids, Tin and Lead: metals |
| group 5A | Nitrogen: gas, Phosphorus: solid non metal, Arsenic & Antimony: metalloids, Bismuth: metal |
| group 6A | Oxygen: gas, Sulfur: non metal, Selenium and Tellurium: solids also border between metal and non-metal, Polonium: radioactive trace element |
| group 7A name | Halogens |
| group 7A characteristics | non metals, Fluorine & CHlorine: gases, Bromine: dark red liquid, Iodine: purple solid, AT: rare, radioactive solid |
| Group 8 | noble gases (sometimes called inert or rare gases) |
| hydrogen | reacts with halogens readily, very explosive with oxygen and other elements |
| groups 1B-8B name | transition metals |
| groups 1B-8B characteristics | typical metals, fill d orbitals |
| Inner transition Metals | Lanthanide series (Atomic #57-70), actinide series (atomic #89-102), fill f orbitals |
| name the first group filled containing all nonmetals | halogen |
| substances with properties of both nonmetals and metals are called | metalloids |
| VERY low reactivity is the distinguishing property of which group? | noble gases |
| which thing would be a non conductor? | a nonmetal |
| what is the most likely oxidation number for any halogen atom? | 1- |
| group VIA elements form ions with what charge? | 2- |
| how valence electrons in group VII? | 7 |
| what charge is associated with the ions of the elements in group 1A? | 1+ |
| what charge is associated with the ions of elements in group II? | 2+ |
| what charge is associated with the ions of the elements in group VII? | 1- |
| who was responsible for the development of the first periodic chart? | mendeleev |
| the modern periodic table by whom? | moseley |
| the energy required to remove an electron from an atom | ionization energy |
| the energy change associated with the addition of an electron to an atom | electron affinity |
| the tendency for an atom to attract electrons to itself when it is chemically combined with another element | electronegativity |
| one half the distance between the nuclei of two identical atoms bonded together | atomic radius |
| when elements are arranged in order of increasing atomic number, there is a periodic pattern in their chemical and physical property | periodic law |