Chemical Formulas Flashcards
Why are some elements on the periodic table represented by two letters rather than one?
The first letters of theses elements already represent a different element, so a second unused letter is added to the first letter.
What is a chemical compound?
A chemical compound is the combination of two or more different elements bonded together.
What is a chemical formula?
A chemical formula is the combination of symbols to represent a particular compound.
What is a molecule of a compound?
A molecule of a compound is a particle made up of two or more atoms of different elements.
What is a molecule of an element?
A molecule of an element is a particle of two or more atoms of the same element.
What are ionic compounds made up of?
One metal element and one nonmetal element.
What are the rules of chemical nomenclature in terms of ionic compounds?
- The metal is named first, and the nonmetal is named second
- The ending of the nonmetal’s name is changed to “ide”
