periodic table
What is the name for the rows in the periodic table
periods
What is an atom
The smallest part of an element
What is a molecule
a neutral group of atoms joined by covalent bonds.
The columns in the periodic table are called ________.
groups
What are the 5 properties of metals
luster, malleability, thermal conductivity, and electrical conductivity,
what groups are called the transition metals
groups 3 through 12
What is a valence electron
the electrons in an atom that have the highest energy / the outer electrons
What is a covalent bond
The chemical bond that is formed when two atoms share electrons
The mass of an atom is determined by combining __________ and _____________.
protons and neutrons
Why are metals good conductors of electric current
Because their valence electrons are free to move
the noble gases are on which side of the periodic table
the far right side
What is an ion
An atom or group of atoms that has an electric charge
What is atomic mass
The number of protons in an element's nucleus
The modern periodic table is arranged in order of increasing __________ __________.
atomic number
What kind of bond is it when they share one pair of electrons
Covalent
In what group are the most reactive non-metals located, and what are they called
They are in group 17 and are called the halogens
What is an ionic bond
a bond formed between two oppositely charged ions
What is Ducktility
Easily bent and pulled into thin strands
The number of __________ ____________ in the atom of an element determines its chemical properties.
valence electrons
What is this element Hg
Mercury
what is the name for group one (not including hydrogen)
The Alkali metals
What is the difference between a polar and a nonpolar bond
In a polar bond, electrons are shared unequally, but in a nonpolar bond, they are shared equally
What is an alloy
A mixture made of 2 or more elements in which at least one has to be a metal
Ionic compounds have __________ melting points.
high
What is the atomic number
The amount of protons in the atom of an element