What is the smallest particle of a substance that retains all the properties of the substance and is composed of one or more atoms?
What is a chemical formula for a compound existing as discrete molecules that gives the total number of atoms of each element in a molecule example the molecular formula for water is H2O?
Is an expanded molecular formula (as H-O-H for water) showing the arrangement within the molecule of atoms and of bonds?
What is the space occupied by an electron or several electrons encircling the nucleus of an atom at a particular energy level?
This is sometimes called the _____ rule because except for the first shell it takes eight electrons to fill the shells in most of the atoms important in living things?
What are links that combine two or more atoms?
What is an electron mostly found in the outer most shell that is required to make a chemical bond?
What is a particle that has gained or lost a particle?
What is a positively charged Ion?
What is a negatively charged Ion?
This occurs when a negatively and positively charged particle combine
What molecule results when electrons are not shared equally causing an uneven distribution of charges?
What is a weak bond between a hydrogen atom of oxygen or nitrogen?
What are chemicals that take part in chemical reaction?
vocab terms chapter 2 topic 4,5,6