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)氣(qi)(qi)(qi)球(qiu)(qiu)里是(shi)(shi)氫(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)，氫(qing)(qing)(qing)(qing)原子是(shi)(shi)元素(su)周期表它只(zhi)含(han)一個質子相對分(fen)子量小氫(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)的(de)密度(du)小。其實只(zhi)要是(shi)(shi)密度(du)比(bi)空氣(qi)(qi)(qi)輕(qing)的(de)都(dou)可以(yi)用，但(dan)是(shi)(shi)就不(bu)叫“氫(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)球(qiu)(qiu)”了。我們(men)(men)玩(wan)氫(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)球(qiu)(qiu)時也存在不(bu)安全的(de)因(yin)(yin)素(su)，氫(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)易燃燒(shao)爆(bao)(bao)(bao)炸，如(ru)果在人口密集區存有大(da)量氫(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)球(qiu)(qiu)，就要當心自身的(de)安全，注意(yi)不(bu)要讓氫(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)和(he)氯氣(qi)(qi)(qi)混合，當它們(men)(men)的(de)比(bi)值達到1:1時，即使(shi)陽光直射也會發生爆(bao)(bao)(bao)炸，所以(yi)可以(yi)充(chong)氫(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)和(he)氦氣(qi)(qi)(qi)，因(yin)(yin)為(wei)(wei)這兩種(zhong)氣(qi)(qi)(qi)體都(dou)比(bi)空氣(qi)(qi)(qi)要輕(qing)。充(chong)氦氣(qi)(qi)(qi)的(de)比(bi)較多，因(yin)(yin)為(wei)(wei)氦氣(qi)(qi)(qi)是(shi)(shi)惰性氣(qi)(qi)(qi)體，比(bi)較安全。氫(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)么，純凈的(de)氫(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)自己不(bu)會爆(bao)(bao)(bao)炸，只(zhi)是(shi)(shi)和(he)氧氣(qi)(qi)(qi)混合后遇(yu)火會爆(bao)(bao)(bao)炸，考慮安全問(wen)題，比(bi)較少用氫(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)充(chong)氣(qi)(qi)(qi)球(qiu)(qiu)了。

氣球升空原理：

氣(qi)球受(shou)自身的重力和空氣(qi)浮(fu)力

自身重(zhong)力=氣球重(zhong)力+球內氫氣重(zhong)力

空氣浮力=空氣平均(jun)密度*g*氣球(qiu)體積(ji)。