Question

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Write a plan. List all of the materials and tools you will need. Be sure to write
the steps you will follow to determine if a chemical reaction has taken place
in the putty or the dough.

Answer 1

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Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. Some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. Understanding chemical changes is a major part of the science of chemistry.

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Answer 2

materials and tools are nitrogen sulphur halogens and phosphorus present in an organic compound are detected by'Lassaigne 's test. the king the elements present in the compound are converted from covalent from into the ionic form by using the compound with sodium metal following reactions take place
Na+C+N+heat =NaCl.
2Na+S+heat =Na2S.
Na+X=NaCl (X=halogen)
carbon dioxide nitrogen and Sulphur and halogens come from organic compounds
cyanide sulphide and halide of sodium so formed on sodium fusion are extended from the fusion mass by boiling it with distilled water.
is the extract is known as sodium fusion extract .