Consider the elements: He, Ne, and Ar. Can you come up with a reason why they are in the same group in the periodic table? Explain the trend in melting point of metals across period 3 elements. Why was Mendeleev's periodic table rejected?
Explain why metals conduct electricity. In terms of structure, explain why a water solution of salt conducts electricity but a water solution of sugar does not. Explain how sodium stearate, a soap, works through its structure. Explain how ...
Why are some cooking pots lined with copper? When industrial chemists want to make chlorine and lye through electrolysis, why can't they use electrodes made of common metals, such as silver or iron, or z...
Why is copper (II) sulfate solution a good conductor of electricity? Why are metals good conductors of electricity? How can you know when a molecule is a semi-insulator? Is it only metalloids? Explain. Why does cold metal conduct electricity better than...
To explain why ionic solids conduct electricity in the molten state but not in the solid state, we can break down the reasoning into several steps:1. Understanding Ionic Solids: Ionic solids are composed of positively and n
When the electricity flows through the circuit they make, the electrolyte splits up and some of the metal atoms it contains are deposited in a thin layer on top of one of the electrodes—it becomes electroplated. All kinds of metals can be plated in this way, including gold, silver, tin...
Can the pace of growth possibly continue? Could solar really make a difference to climate change before it's too late? Watch this space! A brief history of solar cells 1839: French physicist Alexandre-Edmond Becquerel (father of radioactivity pioneer Henri Becquerel) discovers some metals are ...
a) Describe, in detail, why metals are good conductors of electricity. b) How are semiconductors different from "regular" metals, and how can this be controlled to allow for modem electronics. What is corrosion? Describe the corrosion of stainless steel. Explain the electrochemical ...
Do metals and nonmetals conduct electricity and heat? Explain. Why does the boiling point decrease with a decrease in pressure? What are the factors that can affect the boiling point of a substance? Explain why the melting points of most plastics are lower than most ceramics. Explai...
Most metals form their compounds in this way. The electrical charge that ions have can be useful in all sorts of ways. Ions (as well as electrons) help to carry the electricity through batteries when you connect them into a circuit. How many atoms are there in something? If atoms are ...