科學X博士

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小宇宙自然科學教室【加速反應】

除了加入催化劑之外還有哪些因速可以加速反應呢? 其中之一就是接觸面積，今天讓大家了解為何麵粉工廠內絕對不可以點火！因為大量麵粉與空氣接觸面積增加太多，使其有一點煙火就可以引發爆炸。小宇宙自然科學教...

2015-12-26 02:01:26 有 34 人看過有 0 人說讚

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小宇宙自然科學教室【一口氣有多長】

肺活量是指一次盡力吸氣後，再盡力呼出的氣體總量，它是一次呼吸的最大通氣量，在一定意義上可反映呼吸機能的潛在能力。根據肺活量能夠顯示一個人的心肺功能，肺活量大的人，身體供氧能力更強。小宇宙自然科學教...

2015-12-26 01:53:04 有 126 人看過有 0 人說讚

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小宇宙自然科學教室【筆芯麥克風】

為什麼我們的聲音可以透過電線來傳送？聲音又是怎麼透過麥克風被放大的？讓我們今天透過自己來做一隻麥克風，一起思考為什麼吧！小宇宙自然科學教室桃園市中壢區新明路43號4樓 http://www....

2015-12-26 01:39:11 有 143 人看過有 1 人說讚

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小宇宙自然科學教室【電解】

今天來做電解一般水溶液，也就是不添加任何電解質，這會造成水的導電性很差，因此我們需要很大的電壓，所以我們需要同學靠之前所學自己接出50伏特以上的電壓，實驗的核心在於觀察氣泡產生的速率，還有顏色，讓學生...

2015-12-26 01:14:28 有 66 人看過有 0 人說讚

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小宇宙自然科學教室【驚嚇地雷包】

在本次的實驗中，構成地雷包最主要的兩個成分： (ㄧ)鹼性物質：小蘇打粉 (二)酸性物質：檸檬酸當兩種物質互相混合，並且加入水後，會產生大量的氣體。這個過程稱為「酸鹼中和反應」。小宇宙自然科學教室...

2015-12-26 00:38:13 有 906 人看過有 1 人說讚

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小宇宙自然科學教室【硝酸】

今天來認識硝酸是甚麼，來製造二氧化氮並瞭解如何將其安全回收~除了認識硝酸今天來要來了解電解質是甚麼，用酒精、氫氧化鈉、硝酸鉀來檢驗哪些是可以導電屬於電解質的物質，哪些是不行導電屬於非電解質。小宇宙...

2015-12-26 00:34:10 有 158 人看過有 0 人說讚

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小宇宙自然科學教室【驚嚇地雷包】

2015-12-26 00:24:42 有 288 人看過有 0 人說讚

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小宇宙自然科學教室【電解】

生活中的水是我們熟知的有氫元素跟氧元素，電解是一種常用於分解物質的方法，那照簡單化學概念來想，氫元素因該可以還原成氫氣，氧元素因該可以氧化成氧氣，今天就用實驗來見證到底是不是如此。小宇宙自然科學教...

2015-12-26 00:12:08 有 68 人看過有 0 人說讚

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小宇宙自然科學教室【硝酸跟硫酸】

今天來認識硝酸跟硫酸，硫酸是一種脫水性的催化劑，硝酸是常用於火藥的原料，今天我們來把一般纖維轉成硝化纖維，硝化纖維是一種魔物師常用的瞬間燃燒魔術紙哦! 小宇宙自然科學教室桃園市中壢區新明路43...

2015-12-26 00:06:57 有 497 人看過有 0 人說讚

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小宇宙自然科學教室【硝酸鉀】

二氧化碳在同學印象中都是一種讓火熄滅的氣體，由於小學的課本都跟我們說氧氣有助燃氣而二氧化碳沒有，所以火放入二氧化碳中會馬上熄滅。今天要做的氧化還原實驗則要會推翻這個印象的鎂帶在二氧化碳中燃燒！一起來推...

2015-12-26 00:00:50 有 190 人看過有 0 人說讚