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