Because It Is Virtually Impossible to Control for All Possible

question 152

Short Answer

Because it is virtually impossible to control for all possible factors that might influence the outcome of an experiment,researchers use __________ to try to even out potential differences among their groups.

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Definitions:

Metallic Salt

A chemical compound that is generally in a crystal state and exhibits the properties of a metal.

Electroplating Operation

A process that uses electrical current to reduce dissolved metal ions so that they form a coherent metal coating on an electrode.

Positive Terminal

The electrode in an electrical device from which current flows away, typically marked with a positive sign and higher potential energy.

Anode

The positive terminal of an electric device.