302 0 obj <>/Filter/FlateDecode/ID[<162D63840A910B4B8F5BF69543FC0F7C><7498312731CF7A4B88F74328C31AE0CD>]/Index[289 22]/Info 288 0 R/Length 73/Prev 47848/Root 290 0 R/Size 311/Type/XRef/W[1 2 1]>>stream 2017/2018. Practical details. h�ԗ[k�:���[8����!����6�&���71�a/aץ����X��{���9��Ac�f4�F�jKY Liquids or solids can be tested simply by introducing the sample into the flame. 310 0 obj <>stream 0 This is used in chemistry to analyse a material for type and concentration of atoms. %PDF-1.5 %���� The heat of the flame excites the electrons of the metals ions, causing them to emit visible light. Clean a platinum or nichrome (a nickel-chromium alloy) wire by dipping it into concentrated hydrochloric acid and then holding it in a hot (non-luminous) Bunsen flame. Experiment #1: Flame Test. Academic year. Therefore, in this experiment… @�@��l�F20ܷ�"W� ��< Its purpose is to identify specific elements in a material. endstream endobj startxref If the flame is looked at through a spectroscope it will give a characteristic spectrum. Thisdistinction is shown by the color of flames given out when the salt containingcertain me… Lab report - Experiment #1: Flame Test. Thanks. Primarily, the flame test detects the presence of metalions in a compound, and as ions of each element have a specific characteristicbased in their emission spectrum, the flame test for every element is differentand distinctive. )Ji����B��(�ʕh B�&����Ż���z���7��ts|\�lo�U'���8��6��C'����7A��|Q�oEi����;=]��>�.�Mh)%�!�y�l�^\��f+.���zY�^���^6Y�@�/?\���4��Cq��,�u}�1R�z�ޞ�����e�,?� ��_� �d7�c��_�� �^� Course. Please sign in or register to post comments. Share. Timothy• 1 year ago. Hazel Banawis. Dorwins• 2 months ago. 289 0 obj <> endobj Carrying out a flame test. For example, sodium makes the flame turn bright orange – this is the same orange color made by sodium street lamps and many fireworks. Related documents. q�8db�7���]��/����ն���v���� L6O;{W���mmq��[��\m�7�'�ﺇ���A���-MY�fa�P|�M�ކB6gxK�!Fc���^k�,OB:���t�!TlQGI��u�'[���7�@�u�E:�C=oy�y�Q��N9�{B�Ec�O�:��@>6��=M��;`u���GZ��y��P�129��£DG. Comments. The flame test is used to visually determine the identity of an unknown metal or metalloid ion based on the characteristic color the salt turns the flame of a Bunsen burner. This activity is called a flame test and it’s a real procedure used in labs. The cream of tartar yielded a purple-colored flame. This process … Theflame test is one of the most commonly used analytical processes in chemistry.It is widely used to detect and analyze the presence of certain elements in thegiven salt or compound. h�b``�b``Je`d`PNb�[email protected] ~& �h``����Az� ��f`��B3��3�2p1nշ��0a�"��� �! %%EOF When the boric acid was in the flame, you probably notice a bright green portion of the flame. … Analytical Chemistry (CHM4) Uploaded by. FLAME TEST LAB . Chemists ‘burn’ the substance and measure the frequency (colour) of the light given out. You may have seen it only briefly but it was there. endstream endobj 290 0 obj <>/Metadata 15 0 R/PageLayout/OneColumn/Pages 287 0 R/StructTreeRoot 25 0 R/Type/Catalog>> endobj 291 0 obj <>/Font<>>>/Rotate 0/StructParents 0/Type/Page>> endobj 292 0 obj <>stream Helpful? University. When metal salts (ionic compounds) are heated in a Bunsen burner flame, the metal gives off a characteristic color. Our Lady of Fatima University. In this lab you will be given six unknown samples of metal salt, and you must determine which salt is which. wow its mervoulous . Repeat this until the wire doesn't produce any colour … The green color denotes the presence of the element boron (B) which you’d expect in boric acid. Whatever instrument is used to introduce the sample must impart no color itself. h�bbd``b`�$[A�2�`��[email protected]�f ��$�b��y�">���L���,F���=� �� 119 47. For other metals, there are usually other easy methods which are more reliable - but the flame test can give a useful hint as to where to look.