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)(qing)氣(qi)(qi)(qi)(qi)球(qiu)里是氫(qing)(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)，氫(qing)(qing)(qing)(qing)(qing)(qing)原子(zi)是元素周期表它只(zhi)含(han)一(yi)個質子(zi)相對分子(zi)量小(xiao)氫(qing)(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)的(de)(de)密(mi)度小(xiao)。其實只(zhi)要(yao)是密(mi)度比(bi)(bi)空(kong)氣(qi)(qi)(qi)(qi)輕的(de)(de)都可以用(yong)，但是就不叫(jiao)“氫(qing)(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)球(qiu)”了(le)。我們玩氫(qing)(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)球(qiu)時(shi)(shi)也(ye)(ye)存(cun)在不安(an)(an)(an)全的(de)(de)因(yin)素，氫(qing)(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)易燃(ran)燒爆(bao)炸，如果在人口密(mi)集區(qu)存(cun)有大量氫(qing)(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)球(qiu)，就要(yao)當心自(zi)身的(de)(de)安(an)(an)(an)全，注意不要(yao)讓氫(qing)(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)和氯(lv)氣(qi)(qi)(qi)(qi)混合，當它們的(de)(de)比(bi)(bi)值達到1:1時(shi)(shi)，即使陽光(guang)直射也(ye)(ye)會(hui)發生爆(bao)炸，所以可以充(chong)(chong)氫(qing)(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)和氦(hai)氣(qi)(qi)(qi)(qi)，因(yin)為(wei)這兩種氣(qi)(qi)(qi)(qi)體(ti)都比(bi)(bi)空(kong)氣(qi)(qi)(qi)(qi)要(yao)輕。充(chong)(chong)氦(hai)氣(qi)(qi)(qi)(qi)的(de)(de)比(bi)(bi)較(jiao)(jiao)多，因(yin)為(wei)氦(hai)氣(qi)(qi)(qi)(qi)是惰性氣(qi)(qi)(qi)(qi)體(ti)，比(bi)(bi)較(jiao)(jiao)安(an)(an)(an)全。氫(qing)(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)么，純凈的(de)(de)氫(qing)(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)自(zi)己不會(hui)爆(bao)炸，只(zhi)是和氧氣(qi)(qi)(qi)(qi)混合后遇火會(hui)爆(bao)炸，考慮安(an)(an)(an)全問題，比(bi)(bi)較(jiao)(jiao)少(shao)用(yong)氫(qing)(qing)(qing)(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)充(chong)(chong)氣(qi)(qi)(qi)(qi)球(qiu)了(le)。

氣球升空原理：

氣(qi)球受自身(shen)的重力和空氣(qi)浮力

自身重(zhong)(zhong)力(li)=氣球(qiu)重(zhong)(zhong)力(li)+球(qiu)內氫氣重(zhong)(zhong)力(li)

空氣浮力=空氣平均(jun)密度*g*氣球體積。