Name the group of elements with stable electron configuration.
What is noble gases?
100
Explain the trend of ionization energy.
What is increase from left to right across the periodic table and decrease from top to bottom?
100
Explain the formation of an ionic bond.
What is electrons are transferred?
100
In a chemical formula, explain what a subscript represents.
What is the ratio of one element to another?
100
In its simplest form, the alloy brass consists of zinc and _________________.
What is copper?
200
Explain why atoms gain and lose electrons.
What is to reach stable electron configuration?
200
Give the 4 properties of ionic compounds.
What is high melting/boiling points, crystal lattice structure, shatter when hammered, and poor conductors as solids and good conductors when melted?
200
True or false: Covalent bonds form double and triple bonds denoted with a long dash.
What is true?
200
Beryllium, Be, and chlorine, Cl, form a binary compound with a one-to-two ration of beryllium ions to chloride ions. Give the formula for this compound.
What is BeCl2?
200
In general, the more ___________________ a metal has, the stronger its metallic bonds will be.
What is valence electrons?
300
Explain what the symbol represents in an electron dot diagram.
What is the nucleus and all non-valence electrons?
300
Define polar covalent bond.
What is electrons are not shared equally between atoms?
300
Define a metallic bond.
What is the attraction between a metal cation and a shared pool of electrons?
300
The chemical formula for calcium chloride, CaCl2, shows that the compound contains two _______________ ions for every _______________ ion.
What is chloride,calcium?
300
Two factors that determine whether a molecule is polar are the types of atoms in the molecule and the ______________ of the molecule.
What is shape?
400
In an electron dot diagram, each dot represents a(an) ________________________.
What is valence electron?
400
The elements that are most likely to form more than one type of atom are these.
What are transition metals?
400
If there are two long dashes between two atoms in a structural formula, molecules of the compound contain a(an) ____________________ bond.
What is double?
400
KBr is the formula for an ionic compound. The fact that neither symbol is followed by a subscript means that there is a(an) ________________________ ratio of ions in the compound.
What is one to one?
400
A(An) ______________________ ion is a covalently bonded group of atoms that has a positive or negative charge.
What is polyatomic?
500
In a periodic table that included electron dot diagrams, tell what column would the diagrams contain more dots - alkaline metals or halogens.
What is halogens?
500
Roman numerals next to an element system typically represent this.
What is element charge?
500
In an ionic compound, the sum of the charges of all the cations and anions must be _______________.
What is zero?
500
The compound whose formula is SO3 is called sulfur _______________.
What is trioxide?
500
In a metal lattice, ________________ are surrounded by a pool of shared electrons.