Why do transition elements form colored compounds? Give reasons why most of the compounds formed by transition elements are colored. Why is hydrogen grouped in both groups 7 and 1? Give a brief answer. Explain why Zr4+ ion exists? Explain how electrons are waves and not particles. Giv...
Why do some ionic compounds dissociate in water and others do not? Why are most solid ionic compounds electrically non-conductive, whereas aqueous solutions of ionic compounds are good conductors? Briefly describe, why do elements in a given group have simila...
What are the chemical elements that form carbohydrates? What types of food have carbohydrates in them? What is the smallest sub-unit of carbohydrates? Explain how the shapes of carbohydrates, lipids, and proteins relate to their functions. ...
If you know where a certain element sits in the table, and you know a little bit about the properties of the elements above, below, and either side, you can often figure out what the properties of that element will be.How do atoms make molecules and compounds? Atoms are a bit like ...
Describe bond formation between two bromine atoms to form a molecule of Br2. a) The bond can form when 3p orbitals on each atom overlap. b) The bond can form when 4p orbitals on each atom overlap. c) The bond can form when 2p orbitals ...
Although there is an [#highlight10]abundant[/highlight10] supply of nitrogen in Earth’s atmosphere, it cannot be absorbed by plants unless it is “fixed,” or combined chemically with other elements to form nitrogen compounds. Nitrogen-fixing bacteria help tropical rain forest plants cope with...
The electrodes and electrolyte are made from carefully chosen elements or compounds. 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 ...
(but even then, it's a toss-up as to whether I'd get the elements right). I studied chemistry for five years at secondary school and got good grades, but you'd be amazed at how little sticks when you have absolutely no need for it in day-to-day life. --enchantedsleeper(talk) ...
23.( )Only words of the same parts of speech can be combined to form compounds. 24.( )Sentences are not formed by randomly combining lexical items, but by following a set of syntactic rules that arrange linguistic elements in a particular order. 25.( )The same semantic feature occurs in...
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