<font face="標楷體" size="5">金屬納碰到水以後,會形成氫氧化鈉,<br /><br />使水溶液形成強鹼<br /><br />因此酚酞指示計會變成粉紅色<br /><br /><br /></font> <object width="425" height="355"><param name="movie" value="http://www.youtube.com/v/Jw9p-5t8wWY&hl=en"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/Jw9p-5t8wWY&hl=en" type="application/x-shockwave-flash" wmode="transparent" width="425" height="355"></embed></object> <object width="425" height="355"><param name="movie" value="http://www.youtube.com/v/l9z5-mJ8NZk&hl=en"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/l9z5-mJ8NZk&hl=en" type="application/x-shockwave-flash" wmode="transparent" width="425" height="355"></embed></object> <!-- more -->