Vocabulary
Atoms, Bonding, and the Periodic Table
Ionic Bonds
Covalent Bonds
Bonding in Metals
100
A representation of the valence electrons in an atom, using dots.
What is electron dot diagram?
100
these are described as:
loosely held by the nucleus
shown on electron dot diagrams
transfered or shared in bonding
What are valence electrons?
100
An atom or group of atoms that has an electric charge.
What is an ion?
100
A covalent bond is called this if the atoms equally share one or more pairs of electrons.
What is nonpolar?
100
An attraction between a positive metal ion and the electrons surrounding it.
What is metalic bond?
200
What is a polyatomic ion?
An ion made of more than one atom
200
the number of these remains the same from top to bottom in a group in the periodic table.
What is valence electrons?
200
These ions are composed of more than one atom.
What are polyatomic ions?
200
A covalent bond in which electrons are shared unequally is considered what?
What is a polar bond?
200
The following are characteristics of this:
electrical conductivity
ability to be hammered into sheets
luster
What is metallic bonding?
300
A chemical bond formed when atoms share three pairs of electrons.
What is a triple bond?
300
Elements in Group 17, the halogen family, are very reactive because their atoms have this many valence electrons.
What is seven?
300
This type of ion is formed when an atom loses an electron.
What is a positive ion?
300
In a double bond, this many electrons are shared.
What is four?
300
This is a mixture of two or more elements that has the properties of a metal.
What is an alloy?
400
What is a polar bond?
covalent bond where electrons are shared unequally.
400
Most atoms become less reactive after a change to a total number of this many valence electrons.
What is eight?
400
When a compounds written like this:
H2O, MgCl2, NaCl
What is it called?
What is a chemical formula
400
Do molecular compounds have low or high melting points? Does it conduct electric current or does not conduct electric current?
What is low melting point and does not conduct electric current
400
What are 4 properties that metals share?
What is shiny, luster, high levels of malleability, ductility, electrical conductivity, and thermal conductivity.
500
An attraction between a positive metal ion and the electrons surrounding it.
What is a metallic bond?
500
How many valence electrons does group 1 have and is reactivity high or low? How many valence electrons does group 17 have and is reactivity high or low? How many valence electrons does group 18 have and is reactivity high or low?
What is 1, and very high. What is 7, and high. What is 8 and low.
500
When writing an ionic compound, what ion is written first and what ion is written last?
What is the name of the positive ion followed by the name of the negative ion.
500
A bond represented by this model of CO2
What is a nonpolar bond?
500
What is a metal crystal and how do the ions move throughout the crystal?
A metal crystal is composed of closely packed, positively charged metal ions. The valence electrons drift among the ions.