Those electrons that have the highest energy levels.
What is valance electrons?
100
An atom or group of atoms that has an electric charge.
What is an ion?
100
The chemical bond formed when two atoms share electrons.
What is a covalent bond?
100
A mixture made of two or more elements, at least one of which is a metal.
What is an alloy?
100
Oxygen has 6 valence electrons, as indicated by the 6 dots around the letter symbol. Based on this information, how many covalent bonds could an oxygen atom form?
What is two?
200
Diagram that includes the symbol for the element surrounded by dots. Each dot represents one valence electron.
What is electron dot diagram or Lewis dot diagram
200
Ions that are made of more than one atom.
What is a polyatomic ion?
200
A neutral group of atoms joined by covalent bonds.
What is a molecule?
200
An attraction between a positive metal ion and the many electrons surrounding it.
What is a metallic bond?
200
If an reaction occurs between potassium (K) and oxygen (O), what will be the ratio of potassium ions to oxide ions in the resulting compound, potassium oxide?
What is 2:1
300
The force of attraction that holds two atoms together as a result of the rearrangement of electrons between them.
What is a chemical bond?
300
An attraction between two oppositely charged ions.
What is an ionic bond?
300
A time when two atoms share two pairs of electrons.
What is a double bond?
300
Electrons which are held most loosely.
What is valence electrons?
300
The element boron (B) is directly above aluminum (Al) on the periodic table. How many valence electrons does Boron have? Aluminum?
What is they both have 3 valence electrons, as they are in the same group?
400
This is the information that an electron dot diagram shows.
What is the number of valence electrons?
400
A combination of symbols that shows the ratio of elements in a compound.
What is a chemical formula?
400
a compound that is composed of molecules.
What is a molecular compound?
400
What is made when an atom gains or loses an electron.
What is an ion?
400
Balance the following chemical equation... SO2 + O2 ---> SO3
What is 2SO2 + O2 ---> 2SO3
500
The group that has only one valence electron.
What is group 1.
500
What happens when ions form an orderly, three dimensional arrangement.
What is a crystal?
500
A covalent bond in which electrons are unequally shared.
What is a polar bond?
500
Choose the element below which is most likely to lose two electrons and form an ion with a charge of 2+:
K
O
Mg
Al
What is Mg
500
Balance the following equation ...
Fe2O3 + C ---> Fe + CO2