Depending on the expectations of your program, the preferences of your teacher or adviser, and the level of education you are currently at, there are many variations of science lab report you might use. Generally speaking, your science lab report should have a title, abstract, introduction, a list of materials used in your experiment, a description of methods used, your results, discussion with regard to your results, and a list of literature cited.     This may seem like an overwhelming amount of work, but by adhering to a few guidelines and putting in the necessary effort, you'll soon have a report your instructor will love.
If you need to write an abstract for an academic or scientific paper, don't panic! Your abstract is simply a short, standalone summary of the work or paper that others can use as an overview.  An abstract describes what you do in your essay, whether it’s a scientific experiment or a literary analysis paper. It should help your reader understand the paper and help people searching for this paper decide whether it suits their purposes prior to reading. To write an abstract, finish your paper first, then type a summary that identifies the purpose, problem, methods, results, and conclusion of your work. After you get the details down, all that's left is to format it correctly. Since an abstract is only a summary of the work you've already done, it's easy to accomplish!