BBC
Bbc: Gcse Bitesize: Covalent Bonds
A covalent bond is formed between non metal atoms, which combine together by sharing electrons. Covalent compounds have no free electrons and no ions so they don't conduct electricity.
E-learning for Kids
E Learning for Kids: Science: Arctic Ocean: What Are Conductors and Insulators?
Visit Vlad and learn about the properties of conductors and insulators, and what materials are used for them.
WebMD
Medicine Net: Electrolytes
"What are electrolytes?" Find the answer to this question and read information on potassium, chloride, hyperkalemia, and kidney disease.
PBS
Pbs Teachers: Scientific Breakthroughs in Germany: Curing the Storm in the Head
Explore medical breakthroughs in treating epilepsy. Discover how negative and positive particles behave in an electrically neutral environment, and perform an experiment to demonstrate how the human body can conduct electricity.