chemistry test chapter 5
if left outside on a table long enough , a ....... substace such as calcium chloride , will take on enough water to form a liquid solution
Deliquesant
a chemist can often use the process of ....... to separate two liquids from eacj other
Distillation
in order to separate two liquids from each other by distillation they must
Evaporate at different temps
in the compound Al2O3 the simplest ration of atoms in the compound , called the ....... is two atoms of aluminum to three atoms of oxygen
Formula unit
CaSO4 . 2H2O is an ....... because it always contains a fixed ration of water molecules to calcium and sulfate ions
Hydrate
methane and propane are examples of ....... because they contain only carbon and hydrogen
Hydrocarbon
sodium carbonate is a .......... substance because it takes on water molecules to which it becomes chemically bonded
Hydroscopic
in general , compounds that do not contain carbon are classified as .......
Inorganic compounds
an ....... is one inwhich atoms are held together by covalent rather than ionic bonds
Molecular compound
oxygen and ozone are .......,or different forms of the same element
Molecular element
pa compound such as methane that contains carbon is generallly classified as a .......
Organic compound
the sodium ion is said to have an ....... of 1+ because that is the charge on a sodium ion
Oxidation number
the sulfate ion is an example of a ....... because it contains two different elements
Polytomic ion
what can be used as a drying agent
calcium chloride , sodium solfate , magnesium solfate
a substance will conduct electric current if it
forms ions in solution
what is the correct name for Fe2S3
iron (iii) sulfate
based on its position in the periodic table , the most likely charge of an iodide ion is .....
-1
what is the correct chemical formula for a formula unt of aluminum bromide AlBr3 Al2Br6 Al3Br9 Al4Br12
AlBr3
When copper sulfate pentahydrate is heated ,water is driven off leaving behind ........ Copper sulfate
Anyhydrous
a ....... is one that contains two and only two elements
Binary compound