Rust APK
最新版本
1.0 for Windows
更新
2012年May30日
信息
版 1.0 (#1)
更新 2012年May30日
APK檔案大小 1 MB
Android 最低版本需求 Android 2.3+ (Gingerbread)
開發人員 eduMedia
類別 教育 (應用)
應用 ID air.fr.edumedia.a814.en
開發者備註 Rust
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內容描述
Iron nails are placed in five environments:
Tube 1: Just in air
Tube 2: A part of the nail is immerged in water
Tube 3: A part of the nail is immerged in salt water
Tube 4:The nail is completely immerged in boiling water and a layer of oil separates the water from the air
Tube 5: A dehydration product (Calcium chloride or Copper Sulfate) absorbes the humidity contained in the air.
The different hypotheses or this experiment allow us to explain the formation of rust:
Only the nails in the three tubes on the left rust, at a fast rate. The two experiments on the right slow down or stop the formation of rust.
This allows us to confirm that iron does not rust until it is in contact with air and water.
Tube 1: Just in air
Tube 2: A part of the nail is immerged in water
Tube 3: A part of the nail is immerged in salt water
Tube 4:The nail is completely immerged in boiling water and a layer of oil separates the water from the air
Tube 5: A dehydration product (Calcium chloride or Copper Sulfate) absorbes the humidity contained in the air.
The different hypotheses or this experiment allow us to explain the formation of rust:
Only the nails in the three tubes on the left rust, at a fast rate. The two experiments on the right slow down or stop the formation of rust.
This allows us to confirm that iron does not rust until it is in contact with air and water.
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