Atoms
All matter is made of these.
Atoms
Easily hammered into sheets
Malleable
Nonmetals have no ____________ properties.
metallic
Some are ______, some are _______.
Shiny, Dull
Indicates the number of protons in the nucleus.
Atomic Number
These are found in the nucleus and have a positive charge.
Protons
Can easily be pulled into wire
Ductile
Breaks easily, not malleable or ductile
Brittle
Not malleable or ductile
Brittle
Symbol
These are also in the nucleus but are neutral.
Neutrons
Can move electricity and heat
Conductors
Nonmetals are not good ____________ of heat and electricity.
conductors
They can conduct some electricity.
Semiconductors
The mass of both protons and neutrons in the atom.
Atomic Mass
These negatively charged particles revovle around the nucleus of the atom.
Electrons
reflective and shiny
Luster
They are dull and _______________.
Non reflective
Name 2 examples of metalloids.
Boron, Arsenic, Antimony or Silicon
Each one is unique and picked by the person who discovered it.
Element Name
Atoms are mostly _________ space.
empty
Doesnt take a lot of heat or energy to change them
Reactive
Takes a LOT of heat and energy tochange them
Nonreactive
How many metalloids are there in the periodic table?
Seven
Dmitri Mendeleev created the periodic table based on his love of playing _________.
Cards