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Chemical bond
The attraction force that holds atoms or ions togethor
What type of information about a compound can you find from its chemical structure ( FOUR THINGS)
Types of atoms in the compound The bond lengths The bond angles The number of atoms in a compound
What type of substance between solid liquid or gas has a stronger attraction between its molecules?
Solid because it is harder to break apart that liquids & gases
C6H12O6 is the chemical formula for fructose. What can you tell ABOUT THIS MOLECULE BY LOOKING AT ITS CHEMICAL FORMULA
You can tell the type of numbers of atom in a molecule
Why do gases take up more space than liquids or solids
Less attraction between the individual gas molecules than the individual molecules in a solid or liquid
Why do atoms join to form COMPOUNDS
they either have a full outer most energy level , or they can have 8 valence electrons.
What must an atoms have in order to have a stable electron configuration
A full outer most energy level
What happens to atoms when they form an IONIC bond with another atoms
Electrons are taken from some atoms and given to other atoms
IONIC BONDS are very strong why are they so hard to break
There is strong attraction between the OPPOSITELY charged ions
TRANSITION METALS are generally good conductors of electricity. Why?
Electrons are free to roam
What is the difference between IONIC bonds and covalent bonds
IONIC BONDs are bonds formed by the attraction between OPPOSITELY charged ions and covalent charged ions and covalent bonds are formed when atoms are 1 or more pairs of electrons
non polar covalent bond
a covalent bond which atoms equally share all of the valence electrons
polar covalent bond
when two different atoms share electrons the electrons are not shared equally
polyatomic ion
Groups of covalently bonded atoms that have either lost or gained electrons
Some cations are able to form multiple types of ions with different IONIC charges. how are they represented in writing
The separate ion charged are represented by Roman numerals inside of parentheses that are written right after the same of cation
The Fe2+ cation can be written out as
Iron ( l l )
How do you name IONIC compounds ( WHAT ION IS NAMED FIRST WHICH ION CAN HAVE ITS NAME CHANGED
the cation name is written first and is unchanged then the anion name is an altered version from what you see on the periodic table
Name the IONIC compound with the formula CaF2
Calcium Flouride
Name the IONIC compound with the formula CuF2
Copper (l l ) Flouride
Empirical formula
the composition of a compound in terms of the relative numbers and kinds of atoms in the smallest ratio
molecular formula
a compounds molecular formula tells you how many atoms are in one molecule of the compound
is it possible for different compounds to have empirical formulas and molecular formulas that are the same ?why?
No if the empirical and molecular formulas are the same then they must be the exact same compound. and if the molecular formulas are the same