Unit B section 3 Flashcards
2 rules of naming compounds
- metal comes first
- last elements changes ending to ‘ide’
where is the physical state of a compund found in the formula
as a subscript in brackets
How is an aqueous substance identified in a chemical formula
(aq)
what is a molecular compound
2 or more non metals
what is an aqueous substance
dissolved in water
What is the system of naming compounds?
IUPAC international union of pure applied chemistry
what do subscripts in formulas tell us
-how many atoms are in the compound
who is naming of the compounds based on?
Guyton de Marveau
2 types of compounds
- ionic
- molecular
what is an ionic compound
metal and non metal
combination of 2 or more elements
compound
how are ionic compounds formed?
pure substances formed by the attraction between particles of opposite charges called ions
4 properties of ionic compounds
- solid at room temperature
- high melting point
- good electrical conductors
- distinct crystal shape
2 properties of ions
- formed when ionic compounds are dissolved in water
- an ion is an atom/group of atoms that become electrically charged due to loss or gain of electrons
catios
Positive ion
anions
negative ions
group of atoms that behave like one individual atom
poly atomic ions
what is a molecular compound?
a combination of 2 or more non-metals
3 properties of molecular compounds?
- can be solids, liquids and gases at room temperature
- insulators or poor conductors of electricity at r.t
- relatively low melting and boiling points
rules for naming molecular compounds
- the last element changes ending to “ide”
- to show the # of atoms use a prefix
true or false:
monocarbon dioxide
false
rules for drawing molecular compounds
- start with the root element ( least number of atoms in the middle)
- add other elements with branches off the root element
