A scientist whose greatest contribution was organizing the elements into the first Periodic Table
Who is Mendeleev?
100
This generally decreases when moving from left to right across a period.
What is a Periodic Trend in atomic radius?
100
One atoms transfers its valence electrons to another. The other atom accepts the electrons into its outer energy level and becomes a negative ion.
What happens to electrons in an ionic bond?
100
They tend to lose electrons and become positive ions.
What are the characteristics of cations?
100
The diatomic molecule with a triple bond.
What is Nitrogen?
200
A scientist whose greatest contribution was arranging the elements in order of increasing atomic number.
Who is Moseley?
200
It generally decreases when moving from left to right across a period, including the much larger ions in groups 5A or 6A.
What is the Periodic Trend in ionic radius?
200
Have high ionization energies and low electron affinities, and show a general lack of chemical reactivity.
What are the characteristics of Noble Gasses?
200
They determine whether or not an atom is stable, or it will gain or lose electrons to become stable.
What is the importance of valence electrons?
200
Bond length: The more electrons that are shared, the shorter the bond length; the shorter the bond length, the stronger the bond.
What effects the bond strength of covalent bonds?
300
Shiny when smooth and clean, Solid a room temperature, Good conductors of heat and electricity, malleable and ductile
What are characteristics of metals?
300
It generally increases as you move from left to right across a period.
What are the Periodic Trends in ionization energy and electronegativity?
300
An ionic compound whose aqueous solution conducts an electric current.
What is an electrolyte?
300
The ions in an ionic compound are arranged this way. Each positive ion is surrounded by negative ions, and the negative ions are surrounded by positive ions.
What is a crystal lattice?
300
Hydrogen and an oxyanion: ate changes to ic, ite changes to ous
What are Oxyacids?
400
Gaseous, brittle, dull-looking solids, Poor conductors of heat and electricity
What are characteristics of Nonmetals?
400
The rule that states that atoms tend to gain, lose, or share electrons in order to acquire a full set of valence electrons.
What is Octet Rule?
400
The electrons move freely form one atom to the other, and a re often referred to as delocalized electrons.
What are the electrons in a metallic bond?
400
The shared electrons a re considered to be part of the complete outer energy level of both atoms involved.
What are electrons in a covalent bond?
400
This is affected by the bond strength. The the strong the bond, the more of this you have.
What affects bond dissociation energy?
500
Elements with physical and chemical properties of both metals and nonmetals.
What are metaloids?
500
Similar properties and same number of valence electrons.
What do elements in the same column have in common?
500
An ionic compound made up of a cation from a base and a n anion form an acid, such as NaCl.
What is an example of a salt?
500
Hydrogen, Oxygen, Bromine, Carbon, Boron, Nitrogen, and Chlorine