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Lentz Test 12-7
Title. once again.
35
Science
9th Grade
12/06/2010

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Term
the ................ are located to the left of the stair step line of the periodic table
Definition
metals.
Term
different structural forms of the same elements are....
Definition
allotropes.
Term
Positively charged ions are surrounded by freely moving electrons in.....
Definition
metallic bonding.
Term
A(n).......... is a molecule comprised of two atoms
Definition
diatomic molecule.
Term
The.......... elements are in groups 3-12 on the periodic tabe
Definition
transition elements.
Term
when magnesium and fluorine react what type of bond is formed?
Definition
Ionic
Term
What type of a bond is found in pure gold
Definition
Metallic
Term
because electrons move freely in the metals, which property describes metals
Definition
conductors
Term
Which set of elements makes up the most reactive group of all metals?
Definition
Alkali metals
Term
Which element is most reactive of all non metals?
Definition
fluorine
Term
Which element is always found in nature combined with other elements?
Definition
magnesium
Term
Which elements are least reactive?
Definition
noble gasses.
Term
What element is formed when neptunium disintegrates?
Definition
Plutonium
Term
Which of these elements is the main component of steel and the most widely used of all metals
Definition
Iron
Term
What term describes group 1 elements lithium, sodium, and potassium?
Definition
alkali metals
Term
What name is given to those elements which are used in process that create steel and other mixtures?
Definition
The Iron trade
Term
Which major group to these elements belong to?
Definition
transition elements
Term
Which is a property of the elements that make up 98% of your body
Definition
poor electrical and heat conductivity
Term
In which of the phases does the element present in the highest percentage of the human body exist?
Definition
gas
Term
Which element is presented in all organic compound?
Definition
Carbon
Term
Which is not a property of transuraniom elements?
Definition
occur naturally
Term
Metals
Definition
element that is typically a hard shinny solid and is malleable and good conductors of heat and electricity
Term
malleable
Definition
can be hammered or rolled into sheets
Term
Ductile
Definition
can be drawn into wires
Term
Metallic bonding
Definition
This occurs because electrons move freely among a metals positively charged ions and explains properties such as ductility and the ability to conduct electricity.
Term
Radio active element
Definition
one in which the nucleus breaks down and gives off power and energy
Term
Transition elements
Definition
those in groups 3-12
Term
non metals
Definition
elements that are usually gasses or brittle solids
Term
Diatomic molecule
Definition
this consists of two atoms of the same element in a covalent bond
Term
salt
Definition
what is formed when halogen gains an electron from a metal
Term
sublimation
Definition
the process of a solid changing directly into vapor
Term
metalloids
Definition
can form ionic and covalent bonds with other elements and can have a metallic and non metallic properties
Term
opes
Definition
diffrent forms of the same elements
Term
conductors
Definition
elements that can conduct electricity under certin conditions
Term
transuranioum elements
Definition
elements having more than 92 protons
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