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Scientists
Periodic Table
Elements
ATOMS CHARGE
MISC.
100
Who theorized that electrons travel in nearly circular paths, called orbits, around the nucleus?
Niels Bohr
100
What family is Helium in?
Noble gasses
100
Who created the term Element?
Dimitri Mendeleev
100
What is the sharing of a pair of valence electrons by two atoms?
Covalent Bonds
100
What are vertical columns of elements on the periodic table called?
Groups
200
Who did not believe in the existence of atoms?
Aristotle
200
What Atom is [He] 2s2 2p3?
Nitrogen
200
What is the definition of Element?
Cannot be separated by ordinary chemical means into simpler substances
200
What is a form between two atoms when the valence electrons of one atom are completely transferred to a second atom?
Ionic Bonds
200
What are horizontal rows in the periodic table called?
Periods
300
Who concluded that almost all the mass and all of the positive charge of the atom is concentrated in an extremely small part at the nucleus?
Ernest Rutherford
300
Sean decide if your right
Draw the Lewis structure of Cl on the board
300
What is physical property?
any property that is measurable whose value describes a state of a physical system.
300
When you go from left to right what happens to they atoms?
The energy level decrease
300
What is the process of gaining or losing electrons to fill the outermost energy level called?
Ionization
400
Who believed that water was formed form the simplest combination of hydrogen and oxygen atoms?
John Dalton
400
What is the systematic distribution of electron in the energy of an atom?
Electron Configuration
400
What is chemical Property?
A material's properties that becomes evident during a chemical reaction
400
What happens to the atom size when you go left to right on the periodic table?
The Atom size gets smaller
400
What is an atom or group of atoms that has lost or gained one or more electrons and therefore has a net electric charge called?
Ion
500
What is one of John Dalton's theory's?
1)All matter is made of atoms. Atoms are indivisible and indestructible. 2)All atoms of a given element are identical in mass and properties 3) Compounds are formed by a combination of two or more different kinds of atoms. 4) A chemical reaction is a rearrangement of atoms.
500
Does H20 have a lone pair?
Yes
500
Is Aluminum magnetic or nonmagnetic?
Non-magnetic
500
What is the tough group of atoms to take their electron from?
The Noble gasses
500
When grouped together, it is easier to predict the ___________of an element?
Properties