Atomic Basics
The basic building block of all matter.
What is an atom?
Particle with a positive charge
What are protons?
The table arranges elements in order of this number.
What is the atomic number?
Vertical columns on the periodic table are called…
What are groups or families?
Electrons in the outermost shell are called…
What are valence electrons?
The two main parts of an atom.
What are the nucleus and electron cloud?
Particle with a neutral charge
What are neutrons?
The symbol “Si” represents this element.
What is silicon?
Horizontal rows on the periodic table are called…
What are periods?
Why are valence electrons important?
They determine reactivity and bonding.
Atomic Mass includes
What are protons and neutrons?
Particle with a negative charge
What four pieces of information are in each element’s square?
What is Name, symbol, atomic number, atomic mass?
Elements in the same group have the same number of what?
What are valence electrons?
Why are noble gases “happy” (stable)?
What is, their shells are full?
Atomic Number
What is the number of protons in an atom called?
In a neutral atom, the number of protons equals the number of what?
What are electrons?
Which category of elements is shiny, malleable, and a good conductor?
What is metals?
Elements in the same period have the same number of what?
What are energy levels, or shells?
Which element in Period 2 are the most reactive?
What is lithium?
Atomic #/# of Protons gives us this:
What is the name of an element?
What two parts of an atom are the subatomic particles located?
Which elements have properties of both metals and nonmetals?
What are metalloids?
Which group is the most reactive? Which is the most stable?
What is, Group 1 = most reactive; Group 18 = most stable
How many atoms of hydrogen are needed to bond with oxygen to form water?
What is 2?