Atomic Structure and the Periodic Table Flashcards
(31 cards)
What are all substances made of
Atoms
What is the smallest part of an element that can exist?
An atom
What chemical symbol represents sodium
Na
What is a compound?
Two or more elements chemically bonded together and they can only be separated by chemical reactions
what is the history of the atomic model
What is an element?
a substance Made up of one type of the same atom
what is an atom
an atom is the smallest part of an element that can exist
what is an isotope
Atoms of the same element with different numbers of neutrons
how many isotopes does chlorine have
two
how are electrons arranged
they are arranged in shells around an atomic nucleas
what are properties of group 1 metals
there less dense and softer, they are much more reactive, they have lower melting points
do transition metals have a lower melting point then group 1 metals
no group 1s do
as you go down group one does the reactivity decrease or increase
the reactivity increases
as you got down group 1 does the melting and boiling point decrease or increase
the melting and boiling point DECREASE
as you go down group 1 does the relative atomic mass decrease or increase
the relative atomic mass increases
how many outer electrons do the group one elements have
1
are group 0 elements metals or non metals
non metals
are group 0 elements reactive or unreactive
unriactive
why are group 0 elements unreactive
because there electronic structure is stable
what kind of gasses are group 0 elements
they are [colorluss] monatomic gasses
what are monatomic gasses
gas composed of particles (molecules) that consist of single atoms
as you go down group 0 does the boiling point increase or decrease
increase
are group 7 elements metals or non metals
non metals
as you go down group 7 the reactivity decreases or increases
decreases
