A Lesson in a Lab
A Simple Scientific Experiment
★To know some metals and their
reactions with some substances ★To learn how to do an exp
eriment ★ To be able to retell the main points in the text ★ To build up the love for science
What was it made of ?
Choose the best title for Passage A.
1.The Different Uses of Metals 2.The Reaction of Metals 3.The Reaction of Metals with Oxyge
Read Passage A again and answer the questions
1. Which metals react the most with Potassium,sodium and oxygen and water? calsium. 2. What happens when you heat calcium in oxygen? It burns to form an oxide. 3. Which metals react with steam?
4. Does iron have a slow or fast reaction with steam? Slow. 5. Does copper react with water?
No, it doesn’t.
After learning Passage A Do you think it is scientificto make Goujian Sword by using copper
What can we learn from Passage A?
how It is very important to know___ metals can react with different substances __________________________. It is very useful in our daily life.
How many stages are there in a scientific experiment report
Iron in dry air
Iron in air-free water
Iron in ordinary water
① → cotton wool ____
② nails → ___
③___ →oil →water ④___ → nails
⑤ →____ rusty nails
Use of cotton Use of oil Why it rusts wool Keep ⑦ air out of the⑧______________ ________________ Air in the water ⑥ water Keep the nails ______________ dry ________
ordinary water Iron rusts in_______________ dry air Iron doesn’t rust in ___________ and____________ air-free water .
put … in…
add …to …
Observe the following experiment carefully and then write down an experiment report
An Experimennt Report Aim
to find out if potassium reacts with cold water. Apparatus a container, cold water, potassium, filter paper（滤纸), a pair of tweezers(镊子） Method (1)Half-fill the container with cold water. (2)Take a piece of potassium out of the oil. (3)Dry the potasium with the paper. (4)Put the potassium into the water.
The potassium burns.
Potassium reacts with cold water.
? How can you do a scientific experiment successfully? First, we need to have an_____ and prepare aim apparatus _________ for the experiment before we do the experiment. methods Second, we must use correct________to do the experiment and watch carefully. result conclusion Then we can get the____and draw a________.
?Design a simple experiment about metal in groups of five and write down an experiment report.
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