What does atomic number represent?
The number of protons in an atom’s nucleus.
True or false: Noble gases are reactive.
FALSE
Noble gases are generally inert due to their full valence electron shells.
Fill in the blank: Metals are typically ______ conductors of electricity.
Good
What are alkali metals?
Group 1 elements that are highly reactive and have one electron in their outer shell.
Define halogens.
Group 7 elements that are highly reactive nonmetals with seven electrons in the outer shell.
What is the group number for noble gases?
Group 8
True or false: The periodic table is arranged by atomic mass.
FALSE
The periodic table is primarily arranged by atomic number, not atomic mass.
Fill in the blank: Transition metals are found in the ______ block.
middle
What is the period number for elements in the second row?
Period 2
What is the common property of nonmetals?
They are poor conductors of heat and electricity.
True or false: Elements in the same group have similar chemical properties.
TRUE
Elements in the same group share the same number of valence electrons.
What is the trend in reactivity for alkali metals down the group?
Reactivity increases down the group.
Fill in the blank: Boron is located in group ______.
3
What is the significance of the zig-zag line on the periodic table?
It separates metals from nonmetals.
