Chapter 2.1 Flashcards
1
Q
Atomic number (Z)
A
The number of protons in the nucleus of an atom
2
Q
Mass number (A)
A
The number of protons plus neutrons in the nucleus of an atom
3
Q
Ion
A
A charged particle that is formed when an atom loses or gains electrons
4
Q
Isotope
A
Different atoms of the same element with different mass numbers
5
Q
How are isotopes similar and different to each other?
A
They have the same chemical properties but different physical properties
