vocab
the smallest particles of an element that retains the chemical properties
Atom
a column of elements in the periodic table that have similar properties
groups
a group of metals that have characteristics of both metals and wrong metals
sentimental
the periodic table is arranged in a special way. as you go down a group, what do you see increase?
the atomic size
a region around the nucleus of an atom where a specific number of electrons can exist
atomic number
the number of protons of the nucleus of an atom
malleable
a characteristic of metal that is easily shaped
group
vertical groups
as you go across a period what increases?
atomic number
a substance made up of one atom, that cant be broken down
the average mass number in atoms , in a sample of an element
atomic mass
a substance that can only conduct electricity under specific confiditons
semiconductor
properties of metal/transition metals
1. denseness
2. weight
3. tensile strength
4. luster
5. insoluble
6. corrode
7. conductivity
8. high melting points
9.stretching
a substance that is made up of different chemicals
compound
metal
the largest class of which elements are usually shiny or smooth
nonmetal
a class of elements that usually form negative ions, they are usually dull solids of gases.
what is unique about an octet in chemistry?
it is an eight electron outer shell that is only found in noble gasses and makes them stable.
period
a set of elements that have the same number of electron shells, shown as rows in a periodic table
horizontal
poor metal
a group of metals that are soft or weak
The atomic structure
protons: charge: +1 || location: found in nucleus
neutrons: charge: 0 || location: found in nucleus
electrons: charge: -1 || location: orbiting nucleus
characteristics of noble gasses?
colorless, odorless, they have an octet, not reactive