On Friday we did a lab to determine if different elements and compounds would conduct electricity to light a lightbulb. Each element of compound we tested we also tested when it was dissolved in water, however not all dissolved in water. From this lab we learned that in order to conduct electricity the element or compound had to contain some trace of metal. These are the patterns we came up with.
Substances that are soluble in water and conduct electricity have a metal element and one or more nonmetal elements.
Substances that are soluble in water and do not conduct electricity are made of hydrogen, carbon and oxygen atoms.
Substances that are insoluble and conduct electricity are metallic.
Substances that are insoluble and do not conduct electricity are made of non metal elements.
Practice Problems
1. Insoluble means that a substance does not dissolve in water.
3. That substance must have one or more metal elements because metal is a great conductor of heat and electricity.
6A. No, it is made of hydrogen, oxygen and carbon. None of those are metal elements so no electicity will be conducted.
Great job!
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