Chapter 4 Test Flashcards
ionic bonding
bonds that occur between cations and anions
properties of ionic substances
- high melting point
- conduct electricity in a liquid state, not a solid state
-form crystals that are hard and brittle
how do metals and non metal react together
the electron lost by the metal can be taken up by the non metal as it is more electronegative.
empirical formula
a chemical formula that shows a simple numerical ration in which atoms are combined.
why do ionic compounds conduct
…
limitations of ionic models
doesn’t show how ions are arranged in space
benefits of ionic models
shows
- how ionic bonds are formed
- ratio in which atoms react
benefits of three dimensional model of ionic compounds
show
- how ions are arranged in a lattice structure
Limitations of three dimensional model of ionic compounds
- not to scale
- shows no information on ions attraction
what are the limitations of the ionic compound
-only shows the arrangement of one layer
- doesn’t show where ions are located on other layers or relationships
uses of sodium
- regulates body fluid balance
-controls blood pressure
uses of potassium
- level of body fluids
- reactions within cells
uses of calcium
- blood clotting
- in bones and teeth
binary ionic compounds
ionic compounds made from two elements
what happens when the atomic number increases
atoms become larger
