An ionic bond is formed when _________ are ____________ from one atom to another atom
electrons, transferred
100
What is a covalent bond?
A covalent bond forms when atoms share one or more pairs of electrons
100
What is a metallic bond?
A bond formed by the attraction between positively charged metal ions and the electrons in the metal
100
Name the three ways atoms fill their outer electron shells
They gain, lose or share electrons
100
What number of electrons do most atoms need in their outer shell to be fully energized
8 (octet)
200
What is an ion?
A charged particle that forms when atoms gain or lose electrons
200
Between which of the following atoms is a covalent bond most likely to occur?
a. calcium and lithium
b. sodium and fluorine
c. nitrogen and oxygen
d. helium and argon
C: nitrogen and oxygen
200
Describe how metallic bonds are different from a covalent and an ionic bond
Electrons are moving more freely around the positively charged atoms because the atoms are very close together
200
An interaction that holds two atoms together is a __________ ________
chemical bond
200
What is the charge on an ion that has 12 protons and 10 electrons?
A positive charge of 2
300
What types of atoms usually become negative ions?
a. metals
b. nonmetals
c. noble gases
d. all of the above
b: non metals
300
Name a property of metal and describe why metallic bonds make it that way
Metal is more flexible and it can be made into wire. it is because the electrons swim freely around the metal ions and the atoms in the metals can be rearranged. So they are easily manipulated
300
Name a very popular item that is a result of covalent bond?
plastic or water
300
Which element has a full outermost energy level containing only two electrons?
a. flourine
b. helium
c. hydrogen
d. oxygen
C. hydrogen
400
How does an atom become a positive ion?
Lose and electron
400
How many electrons does sulfur have in its outer shell?
6
400
Name three properties of metals
Conductivity, ductility, and malleability
400
An electron in the outermost energy level of an atom is called a ____________ electron
valence
400
in the group 17, how many valance electrons do the electrons have?
7 (they have ten less than the group number)
500
How does an atom become a negative ion?
By gaining an electron?
500
What happens to electrons in covalent bonding?
The electrons are shared between two atoms
500
How do the metallic bonds in a staple allow it to function properly?
a staple must bend to hold papers together. The metallic bonds in the staple allow it to bend without breaking
500
What is the definition of a molecule?
Two or more atoms joined together
500
Which type of atoms do not usually form chemical bonds and why?
Noble gases, because they already have 8 electrons in their outer shell