Uwants TV消閒生活手機討論遊戲地帶影視娛樂校園生活數碼科技寵物樂園學術文化體育世界購物廣場時事投資貼圖影片上班一族美容纖體戀愛婚姻汽車討論成人資訊博彩娛樂資源交流站務管理
發帖
註冊 登入/註冊



追帖 打印

[物理 Phy] HKDSE Physics Question Review (2020-07-27)



HKDSE Physics Question Review (2020-07-27)

[隱藏]
1. What does CMYK stand for? State the hybrid colors from this.

回覆 引用 TOP

Solution:

Cyan, Magenta, Yellow, Black

Cyan + Magenta = Purple
Yellow + Cyan = Green
Yellow + Magenta = Orange

[ 本帖最後由 AIJ 於 2020-7-27 02:45 AM 編輯 ]

回覆 引用 TOP

2. Explain whether radioactive decay is chemical change.



回覆 引用 TOP

Solution:


Chemical changes are defined as changes in electronic configurations of atoms, not changed in nuclear structures. Since beta decay emits electrons from the proton inside the nucleus, it even cannot be regarded as chemical changes as the electronic configuration is not altered.

回覆 引用 TOP



[按此隱藏 Google 建議的相符內容]
 提示:支持鍵盤翻頁 ←左 右→ 發新話題發佈投票
請先登入
小貼士:
依家可以用“@”tag會員啦!