<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.zote ni laini na zina rangi ya kijivu-kifedha lakini hewani zinaelekea haraka kuwa nyeusi zaidi, 8 densiti kubwa na unyumbufu.  <response>: all of them are soft and have a silvery color but tarnish in air,88 relatively high density and plasticity. 