Vocabulary for Covalent Bonding and Molecular Compounds
Elements
acids, bases and compounds
Chemical bonding
100
Who is Dmitri Mendeleev?
Creator of the Periodic table
100
What is the averaged distance between two bonded atoms called?
Bond length
100
what element make balloons float ?
Helium
100
What is a compound?
A substance formed by two elements
100
A _________ is an attraction between atoms that allow the formation of chemical substances that contain two or more atoms.
Chemical bond
200
How many elements are in the Periodic Table?
118
200
What is the energy required to break a chemical bond and form neutral isolated atoms called?
Bond energy
200
what element are pennies made out of ?
Copper
200
what has the ability to turn blue litmus paper red, and reacts to bases and certain metals into salts?
Acids
200
convalent bonds __________ electrons
Share
300
The two most reactive elements in the Periodic Table
Caesium and Flourine
300
Chemical compounds tend to form so that each atom, by gaining, or sharing electrons, has an octet of electrons in its highest occupied energy level.
Octet rule
300
what is the element with the most electronegativity?
Fluorine
300
what reacts with acids to form salts?
Bases
300
An atom that losses or gains an electron is ?
An ion
400
What element has the highest mass?
ununoctium
400
An electron-configuration notation in which only the valence electrons of an atom of a particular element are shown, indicated by dots placed around the elements symbol.
Electron-dot notation
400
what 2 elements make up rust?
iron and oxygen
400
Acids and bases are measured by this
PH Scale
400
what is the name given to the electrons in the highest occupied energy level of an atom?
Valence electrons
500
On which side of the stair steps are the nonmetals?
Right side
500
A pair of electrons that is not involved in bonding and that belongs exclusively to one atom
Lone pair also called unshared pair
500
what two elements are mostly found in air?
nitrogen and oxygen
500
smog and sea water are examples of what ? mixtures , ionic compounds , or covalent compounds