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)(qing)(qing)氣(qi)(qi)(qi)(qi)球(qiu)里是(shi)(shi)氫(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)，氫(qing)(qing)(qing)(qing)(qing)原子是(shi)(shi)元素周期表它(ta)只含(han)一個質子相對分子量小氫(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)的(de)(de)密(mi)度(du)小。其實(shi)只要是(shi)(shi)密(mi)度(du)比(bi)空(kong)氣(qi)(qi)(qi)(qi)輕的(de)(de)都(dou)可以用，但是(shi)(shi)就(jiu)(jiu)不叫“氫(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)球(qiu)”了。我(wo)們玩氫(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)球(qiu)時也存在(zai)不安(an)(an)全(quan)(quan)的(de)(de)因素，氫(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)易(yi)燃燒爆炸(zha)，如果在(zai)人口密(mi)集區存有(you)大量氫(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)球(qiu)，就(jiu)(jiu)要當心(xin)自身的(de)(de)安(an)(an)全(quan)(quan)，注意不要讓氫(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)和(he)氯(lv)氣(qi)(qi)(qi)(qi)混合(he)，當它(ta)們的(de)(de)比(bi)值達到(dao)1:1時，即使陽光直射也會(hui)發生(sheng)爆炸(zha)，所以可以充氫(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)和(he)氦氣(qi)(qi)(qi)(qi)，因為這兩(liang)種氣(qi)(qi)(qi)(qi)體(ti)都(dou)比(bi)空(kong)氣(qi)(qi)(qi)(qi)要輕。充氦氣(qi)(qi)(qi)(qi)的(de)(de)比(bi)較(jiao)多(duo)，因為氦氣(qi)(qi)(qi)(qi)是(shi)(shi)惰性(xing)氣(qi)(qi)(qi)(qi)體(ti)，比(bi)較(jiao)安(an)(an)全(quan)(quan)。氫(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)么，純凈的(de)(de)氫(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)自己不會(hui)爆炸(zha)，只是(shi)(shi)和(he)氧氣(qi)(qi)(qi)(qi)混合(he)后(hou)遇火會(hui)爆炸(zha)，考慮(lv)安(an)(an)全(quan)(quan)問(wen)題，比(bi)較(jiao)少用氫(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)充氣(qi)(qi)(qi)(qi)球(qiu)了。

氣球升空原理：

氣球受自(zi)身的重力和空(kong)氣浮力

自身重力=氣(qi)球重力+球內(nei)氫(qing)氣(qi)重力

空氣(qi)浮力(li)=空氣(qi)平均密度*g*氣(qi)球(qiu)體積(ji)。