Chapter 2 Flashcards
The nucleus of an atom contains
Protons and neutrons
Electrons surround the _______ of an atom
Nucleus
The mass of an atom comes from its ______ and ________
Protons and neutrons
Electrons determine the ______ of an atom
Volume
Protons and electrons determine the ______ of an atom
Charge
All atoms of an element contain the same number of _______ and _______ but may contain different number of ________.
Protons and electrons, neutrons
The electrons in the outermost shell of an atom are:
Valence electrons
Group 1A elements are
Alkali metals
Group 2A elements are
Alkaline earth metals
Group 7A elements are
Halogens
Group 8A elements are
Noble gases
Groups 1B - 8B elements are
Transition and inner transition metals