Chapter 3 Flashcards
1
Q
chemical isolation
A
removing a chemical from a mixture and purifying it
2
Q
atomic number
A
the number of protons in the nucleus of an element
3
Q
atomic mass
A
the average mass of the atoms that make up an element
4
Q
ion
A
an atom that becomes electrically charged because it has an imbalance of electrons and protons
5
Q
ionic compounds
A
substances that are composed of positive and negative ions
