04空氣與燃燒01氧(是非03)
Sign in to Google to save your progress. Learn more
年級 *
班級 *
座號 *
51.   氧氣可以幫助物質燃燒的性質,稱為氧的助燃性。
10 points
Clear selection
53.   用廣口瓶罩住燃燒中的蠟燭,一段時間後,蠟燭仍會持續燃燒,不會熄滅。
10 points
Clear selection
Submit
Clear form
This content is neither created nor endorsed by Google. Report Abuse - Terms of Service - Privacy Policy