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)球里是(shi)氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)，氫(qing)(qing)(qing)原(yuan)子是(shi)元素周期表它只(zhi)(zhi)含一個質(zhi)子相對分子量小氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)的密(mi)度(du)小。其(qi)實只(zhi)(zhi)要(yao)是(shi)密(mi)度(du)比空氣(qi)(qi)(qi)(qi)(qi)(qi)輕(qing)的都(dou)可以(yi)用(yong)，但是(shi)就不叫(jiao)“氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)球”了(le)。我們玩氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)球時也存在不安全的因素，氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)易燃燒爆(bao)炸，如果在人口(kou)密(mi)集(ji)區存有大量氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)球，就要(yao)當(dang)心自身的安全，注意(yi)不要(yao)讓(rang)氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)和氯氣(qi)(qi)(qi)(qi)(qi)(qi)混合，當(dang)它們的比值達到1:1時，即使(shi)陽光直射也會發生爆(bao)炸，所以(yi)可以(yi)充氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)和氦氣(qi)(qi)(qi)(qi)(qi)(qi)，因為(wei)這(zhe)兩種氣(qi)(qi)(qi)(qi)(qi)(qi)體都(dou)比空氣(qi)(qi)(qi)(qi)(qi)(qi)要(yao)輕(qing)。充氦氣(qi)(qi)(qi)(qi)(qi)(qi)的比較(jiao)多(duo)，因為(wei)氦氣(qi)(qi)(qi)(qi)(qi)(qi)是(shi)惰性氣(qi)(qi)(qi)(qi)(qi)(qi)體，比較(jiao)安全。氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)么，純凈的氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)自己(ji)不會爆(bao)炸，只(zhi)(zhi)是(shi)和氧氣(qi)(qi)(qi)(qi)(qi)(qi)混合后遇火會爆(bao)炸，考(kao)慮安全問(wen)題(ti)，比較(jiao)少用(yong)氫(qing)(qing)(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)充氣(qi)(qi)(qi)(qi)(qi)(qi)球了(le)。

氣球升空原理：

氣(qi)球受自身的重力和空氣(qi)浮(fu)力

自身重(zhong)力=氣球重(zhong)力+球內氫(qing)氣重(zhong)力

空氣浮(fu)力=空氣平均密(mi)度*g*氣球體積。