copper cycle lab

a substance breaks down into simpler substances

a substance breaks down into simpler substances

decomposition reactions

combination reaction

substances combine to form a more complex substance

combustion reactions

the rapid reaction of materials with oxygen

double replacement reactions

reactions between ions in solution to form insoluble substances and weak or non-electrolytes (ions appear to change partners)

single replacement reaction

one element takes the place of another in a compound

oxidation/reduction reactions

electrons are transferred from one element to another, usually resulting in the formation of a compound from one element or an element from a compound

electrochemical reactions

oxidation/reduction reactions that provide electricity or can be driven by an electric current

neutralization reaction

reaction of an acid with a base to produce a salt and water

buchner funnel

lab equipment includes a

decant

gradually pour a liquid from one container to another without losing any solid present in the solution

rinsing

rinse a solid with solvent

quantitative transfer

transfer a substance from one container to another by leaving as little to

none of the substance behind in the old container

rinsed; transferring tool

Many times the old container needs to be _ to ensure none of the substance of concern was left behind in the old container. Also ensure none is left on a …

poured down the drain with water

The decant from steps 5 and 6 can be

should be collected for proper disposal

The filtrate from step 11 is acidic and

collected for proper disposal

The methanol and acetone filtrate from step 12 should be

methanol, acetone, acidic filtrate

What must be collected for disposal?

0.5

Obtain a piece of copper wire that is approximately _ g and weigh it to the nearest milligram, record the mass.

beaker; nitric acid; burn; gas

In the benchtop hoods (make sure they are on), place this piece of copper in a 250 mL _ and cover it with 4-5 mL of concentrated …. Be careful. Concentrated nitric acid will … your skin. Also the … that is formed is toxic.

DI water; NaOH

Once all the copper metal has dissolved add approximately 100 mL of _ . Add 30 mL of 3.0 M … to the copper solution and stir with a glass stirring rod.

a precipitate

a solid that usually forms when two solutions are mixed and the substances dissolved in those solutions react to form a solid

heat

In this reaction the precipitate requires _ to form.

decant

to pour off the water solution that is above a precipitate

6.0

Add 15 mL of _ M H2SO4

milligram

weigh the wire to the nearest