element name
B
Boron
what particle has a positive charge
protons
group 13, Period 2
Boron
what is reactivity?
How well atoms are able to bond with one another
what are the three classifications that an element can be put in?
Ne
neon
what particle has a neutron charge
neutrons
Group 1, Period, 1
Hydrogen
how do atoms react with one another?
by using their valence electrons
what type of elements are on the left of the zig zag line?
metals
K
Potassium
what particle has a negative charge
electrons
3 Valence electrons, 3 energy levels
Aluminum
how many valence electrons are atoms trying to gain in order to be stable or non-reactive?
8
what type of elements are on the zig zag line?
metalloids
Ba
Barium
what particle identifies an element
protons
8 valence electrons, 1 energy level
helium
what are the 2 most reactive groups?
1 and 17
what are the characterisitics of metals, non metals, and metalloids?
metals - good conductors, luster, malleable, ductile
Non metals - poor conductors(insulators), dull, brittle
Metalloids - properties of both metals and non metals
Rg
what particles are inside the nucleus? What particle is outside the nucleus?
Protons and neutrons are inside. Electrons are outside
what do groups give us? what about periods? what directions do groups and periods go?
the valence electrons. the energy levels. groups go up and down. periods go left and right.
why can 1 oxygen and 2 hydrogen react well together?
because when combined their valence electrons equal a full outer energy level of 8
what is the group with noble gases only?
group 18