1. Which of the metals in the table reacts the most with oxygen and water?
2. What happens when you heat calcium in oxygen?
Potassium, calcium and sodium.
It burns to form an oxide.
Read again and answer the questions (P44) :
3. Which metals react with steam?
4. Does iron have a slow or fast reaction with steam?
5. Does copper react with water?
Magnesium, aluminium and zinc.
It has a slow reaction.
No, it doesn’t.
What apparatus can we see in a lab?
Can you name the following equipment ?
test tube tube holder tongs balance
crucible beaker & glass rod bunsen burner
iron nails
cotton wool balls
Other vocabulary
react vi. (化学)反应reaction n. 反应oxide n. 氧化物steam n. 蒸汽, 水气
react vi. (化学)反应
reaction n. 反应
oxide n. 氧化物
steam n. 蒸汽, 水气
How to describe a scientific experiment:
aim
method result
conclusion
apparatus
Reading (Passage B)Read the passage and complete the table.
cottonwool
nails
Iron does not rust.
water
Iron doesnot rust.
water
water
Iron rusts.
Passage B – Jigsaw readingPassage B – Jigsaw reading One group reads one experiment report. One group reads one experiment report. Then fill in the form below.Then fill in the form below.
Aim Aim
ApparatusApparatus
MethodMethod Iron in dry air:Iron in dry air:
Iron in air-free water:Iron in air-free water:
Iron in ordinary water:Iron in ordinary water:
ResultResult
ConclusionConclusion
To find out if...To find out if...
iron nails test tubes oil tube holdersiron nails test tubes oil tube holders cotton wool Bunsen burnercotton wool Bunsen burner
After a week, rustAfter a week, rust
( not ) rust in( not ) rust in
Describe the experiment to your partners:
aim
method result
conclusion
apparatus
Iron in dry air:Iron in dry air:
Iron in air-free water:Iron in air-free water:
Iron in ordinary water:Iron in ordinary water:
1. You will hear a conversation in which a teacher helps a student do an experiment. Can you predict
the result according to the aim?
• Aim: To find out if there is a change in weight when the metal magnesium burns in air.
• Result:____________ __________________________________________
Aim:Aim:
Apparatus:Apparatus:
2. Listen again and complete the description of the scientific experiment:
to find out if there’s a change in weight to find out if there’s a change in weight when magnesium burns in airwhen magnesium burns in air
magnesium, Bunsen burner, a balance, magnesium, Bunsen burner, a balance, a cruciblea crucible