1.helium and neon which belong to a group of very unreactive gases,
are examples of??
2.oxygen??a glowing splint.
3.carbon dioxide turns hydrogencarbonate indicator from red to??
4.water turns dry??paper from blue to??
5.breathed air contains more??and water vapour than unbreathed air
.its temperature is??than that of unbreathed air.
中2科學(英文)
2009-09-11 5:36 am
回答 (2)
2009-09-11 8:21 am
✔ 最佳答案
1. Helium and neon which belong to a group of very unreactive gases, are examples of noble gases.2. Oxygen relights a glowing splint.
3. Carbon dioxide turns hydrogencarbonate indicator from red to yellow.
4. Water turns dry cobalt(II) chloride paper from blue to pink.
5. Breathed air contains more carbon dioxide and water vapour than unbreathed air. Its temperature is higher than that of unbreathed air.
2009-09-11 5:45 am
1. noble gases
2. relights
3. orange
4. cobalt ; pink
5. carbon dioxide ; higher
2. relights
3. orange
4. cobalt ; pink
5. carbon dioxide ; higher
收錄日期: 2021-04-13 16:50:16
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