The goal of this game is to enter all your answers as fast as possible. Your score is based on
the flashcard that takes the longest. You are only as fast as your slowest answer, so you need to know
all your flashcards to do well.
The answer is:
triangle
Enter the answer above to continue.
the dense,positively charged mass located in the center of an atom
a negatively charged subatomic particle that is found in the space outside the nucleus of an atom
An Atom is the smallest part of an element that can exist
a positively charged subatomic particle that is found in the space outside the nucleus of an atom
The man who discovered electron energy levels
the number of protons in an atom of an element
a neutal subatomic particle that is found in the nucleus of an atom
a term that means smaller than an atom
a pure substance which is made up of only one type of atom
a table of the chemical elements arranged in order by atomic number