All About Atoms
The positive subatomic particle.
What are protons?
Ca is the ___ for calcium.
What is symbol?
Periodic Table is arranged by increasing ___.
What is atomic number?
The center of an atom.
What is the nucleus?
Columns are called this.
What are groups or families?
The negatively charged subatomic particle.
What are electrons?
The neutrally charged subatomic particle.
What are neutrons?
Rows are called this.
What are periods?
In a neutral atom, these are the same.
What is number of protons and electrons?
Electrons hang out here.
What is the electron cloud?
The atomic number is the same as this.
What is proton number?
This part of an atom determines reactivity.
What are valence electrons?
The atomic mass is equal to this.
What is "protons + neutrons"?
Groups have the same number of these.
What are valence electrons?
A "happy" atom has this number of valence electrons.
What is 8?