Flashcards in Chapter 2 Deck (20)
Smallest unit of matter that enters into chemical reactions.
What is the charge of a proton?
What is the charge of a neutron
What is the charge of a electron?
The atomic number is equal to____
The atomic weight is equal to _____
Isotopes of an element are atoms with different __________________
Numbers of neutrons
Second shell ____
Third shell ____
What is the outermost shell called?
Which particle is found in the nucleus of an atom and has no electrical charge?
2 particles found in the nucleus?
Protons and neutrons
Isotopes are atoms of the same element that differ in _____
The number of protons and electrons in a neutral atom are _____
Give up electrons (positive)
Need electrons. (Negative)
When atoms combine by sharing or transferring valence electrons
Two or more atoms held together by chemical bonds. Example: H2O
A molecule composed of more than one element.
Only the _______ of atoms interact, so they determine an atoms chemical behavior.