Periodic Table and Bonding Flashcards
What is the ability of a substance to transfer heat or electricity?
conductance
A pure substance that cannot be broken down by chemical means is an
element
The ability of a substance to be hammered without breaking
malleability
A material that conducts electricity at high temperatures
silicon
The Russian scientist that developed the Periodic Table
Dmitri Mendeleev
The ability of a substance to reflect light
luster
The name given to rows in the Periodic Table
periods
The name given to columns in the Periodic Table
groups
The ability of a substance to be drawn into wires
ductility
What are the three major divisions of the Periodic Table?
metals, nonmetals, metalloids
What are the most reactive metals? What are some examples?
alkali metals
lithium, sodium, potassium
The atomic number is based on the number of
protons in the nucleus of an atom
Which group of elements have some properties of metals and some properties of nonmetals?
metalloids
List the three parts of an atom and their respective charges.
proton - positive
electron - negative
neutron - no charge
What is an ionic bond?
They type of bond formed from the electrostatic attraction between oppositely charged ions in a chemical compound
Name an example of an ionic compound
table salt
What is a covalent bond?
A chemical bond that involves sharing of electron pairs between atoms
Name an example of a covalent bond
water, ammonia
What electrons are used for bonding?
valence electrons
What happens when an atom gains and electron?
It becomes negatively charged - anion
What happens when an atom loses an electron?
It becomes positively charges - cation
List the properties of an ionic compound (4).
brittle
a high melting point
crystalline structure
solid
What is a metallic bond?
A force that holds atoms together in a metallic stubstance
What are the bonds between metals and nonmetals?
ionic bonds
What are the bonds that form between two nonmetals?
covalent bonds
What is an ion?
an unbalanced atom
In an ionic compound, which order are the charges written in?
cation then anion
Which group is unreactive?
noble gases
What does it mean for an atom to be stable?
They have the same amount of protons and electrons.
Correctly name this section
