If it is moved to be a chart on its own, that is known as a Chart Sheet, not a worksheet, and its name will be Chart1. A Chart sheet, unlike a worksheet, just has a chart and has no cells. Moving a chart from a worksheet will not affect that worksheet's name. So in this case, it would still be Sheet1. If you move a chart to another worksheet, embedding it there, that does not affect the name of that worksheet. So it could b embedded on Sheet2 or Sheet3 or whatever name may have been given to it.
name box
A chart or graph.
Nautical chart
Name box
A chart on an existing worksheet is an embedded sheet and has no specific name. A chart on its on sheet is known as a chart sheet and will initially have the name Chart1, with Chart2 for the next one, Chart3 for the next one and so on. These names can be changed by the users.
Embedded Chart
disorganized confusion
It has always been called Excel. Microsoft had an earlier spreadsheet program called Multiplan, but this was not an earlier version of Excel.
A workbook in Excel will be Book1.xlsx for versions from Excel 2007 onwards, or Book1.xls for earlier versions.
A name with Norse origins, a person with a Norse background.
There are different kinds. The main ones are titles. You can have a main chart title and in some charts titles on the x and y axes. There can also be secondary titles on the axes. You can also have the series name and category name as data labels on a chart. You also have legends to identify elements of the chart.