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必修1《Reading and vocabulary》教案优质课下载
5. oil 6. Bunsen burner Method (1) ________ some iron nails at the bottom
of a test tube.
i. Iron in dry air (2) ________ some cotton wool ________
the tube.
(3) ________ the tube for one week.
(1) ________ a test tube with water.
(2) ________ the water for 3 minutes.
ii. Iron in air-free water
(3) ________ 2 or 3 clean nails
________ the water.
(4) ________ some oil ________ the water.
(5) …
(1) ________ a test tube with water and
iii. Iron in ordinary water ________ 2 or 3 clean nails.
(2) … Result Nails do not rust in ________________________
and ________________________.
Nails rust in _____________________________. Conclusion
________________________________________________I. A Simple Iron Experiment Report
II. A Simple Experiment Report
________________
________________
________________
(1)
(2)
(3)