氫氣球很常見：各種慶典空中飄揚的大型氫氣球；氫氣球是輕質袋狀或囊狀物體充滿氫氣，氫氣輕，其密度為0.0899克每升，靠氫氣的浮力可以向上漂浮的物體就叫氫氣球。氫氣球一般有橡膠氫氣球、塑料膜氫氣球和布料涂層氫氣球幾種，較小的贛州氫氣球，當前多用于兒童玩具或喜慶放飛用。

氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)球(qiu)(qiu)里是氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)，氫(qing)(qing)(qing)原子是元素周期表它(ta)(ta)只(zhi)含(han)一(yi)個質子相對分子量小氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)密(mi)度小。其實只(zhi)要(yao)(yao)是密(mi)度比(bi)空氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)輕的(de)都可以(yi)用，但是就不叫“氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)球(qiu)(qiu)”了(le)。我們玩氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)球(qiu)(qiu)時也(ye)存在(zai)不安(an)(an)(an)全(quan)的(de)因(yin)素，氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)易燃(ran)燒爆炸，如(ru)果在(zai)人(ren)口密(mi)集區存有大量氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)球(qiu)(qiu)，就要(yao)(yao)當心自身的(de)安(an)(an)(an)全(quan)，注意(yi)不要(yao)(yao)讓氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)和氯氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)混合，當它(ta)(ta)們的(de)比(bi)值(zhi)達到1:1時，即(ji)使陽光直射也(ye)會發生爆炸，所以(yi)可以(yi)充(chong)氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)和氦氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)，因(yin)為這(zhe)兩種氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)體(ti)(ti)都比(bi)空氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)要(yao)(yao)輕。充(chong)氦氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)比(bi)較多，因(yin)為氦氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)是惰性(xing)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)體(ti)(ti)，比(bi)較安(an)(an)(an)全(quan)。氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)么，純凈的(de)氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)自己不會爆炸，只(zhi)是和氧氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)混合后(hou)遇火會爆炸，考(kao)慮安(an)(an)(an)全(quan)問題，比(bi)較少用氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)充(chong)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)球(qiu)(qiu)了(le)。

氣球升空原理：

氣(qi)球受自身的重(zhong)力和空氣(qi)浮力

自身重力=氣球重力+球內氫氣重力

空氣浮力=空氣平均密度*g*氣球體積。