Periodic Table
What do the number of protons and electrons tell you?
atomic number
What are the three subatomic particles?
protons, electrons, and neutrons
which metal group is considered to be MOST reactive?
group 1 (alkali metals)
What element has the abbreviation Xe?
How do you figure out the number of neutrons?
atomic mass-atomic number
Which subatomic particle is positively charged?
proton
what is the name of the second group on the periodic table?
alkaline group metals
What element has 17 electrons?
Chlorine (remember since its neutral....that means the number of protons is equal to the number of electrons)
How is the periodic table organized?
by chemical properties
Which subatomic particle is negatively charged?
what is unique about the transition metals?
What element has "K" as the abbreviation?
Potassium
In a neutral atom, what subparticles are equal to each other?
protons and electrons
Which subatomic particle is neutral?
neutrons
what is the name of the group 17 elements?
halogens
What element has 22 neutrons? (Hint: it is a gas)
Argon
What does the abbreviated letter on the periodic table indicate?
Where are electrons located?
they orbit around the nucleus
Which group is considered to be inert?
noble gases--group 18
What element has an atomic mass of 238?
Uranium