4-1 (atoms bonding and the periodic table)
An atom's valence electrons are those electrons that have the –highest-- energy.
True
The number of ______________ in the atom of an element determine its chemical properties.
Valence electrons
Ionic bonds form between two ions that have:
Ionic compounds
Negative charges
Positive charges
Opposite charges
Opposite charges
A(n) ---------- is an atom or group of atoms that has an electric charge.
Ion
ion
An atom with an electric charge
Atoms tend to be stable and nonreactive if they have ---six--- valence electrons.
Eight
Molecular bonds form when -----------------
Metals unit with metals
Because the force of attraction between the positive and negative ions is so strong, ionic compounds have ----- melting points.
high
The attraction between oppositely charged ions is called ----------
Ionic bond
polyatomic ion
an ion composed of more than one atom
In the periodic table, the number of valence electrons in each element ---decreases--- from left to right across horizontally
Increases
A(an)________________ shows the number of valence electrons an atom in pictorial fashion.
Electron dot diagram
Ions that are made of more than one atom are called:
Ionic compounds
Crystals
Polyatomic atoms
Ionic bonds
Polyatomic atoms
When an atom loses a valence electron, it becomes a(n) -----ion
Positive
ionic bond
the attraction between two oppositely charged ions
The reactivity of a metal depends on how easily it ---loses--- its valence electrons.
True
The attractive force that holds tow atoms together is called ________________
Chemical bond
What is another name for molecular bonds?
covalent
In order to have a stable arrangement of 8 valence electrons, metal atoms are likely to ----------------- electrons
Lose
Ionic compound
a compound that consists of positive and negative ions.
Ionic bonds form when ------------- unite
metals and non metals
Because it can either lose or share electrons when it combines with other elements, each ________ has some of the properties of metals and some of the properties of nonmetals.
Metalloid
Which of the following is the correct name for MgCl ?
Magnesium chlorine
Magnesium dichlorine
Magnesium chloride
Magnesium dichloride
Magnesium chloride
In an ionic compound, the total positive charge of all the positive ion -------- the total negative charge of all the negative ions.
Equals
Name the following compound:
MgO
Magnesium oxide