我们能看到的留学机构背景提升项目有很多,有竞赛、有科研、还有一些夏令营。其中,像AMC、BPHO、UKCHO这类很早就打响知名度的竞赛被提及的频率会非常多。本文就挑UKCHO来详细介绍一下,看看被坊间传完“牛剑G5”标配的它究竟有什么魅力吧。
(点击查看NEC、BPHO、AMC竞赛时间汇总,适配文理商科申请的学术能力别忽略)
留学机构背景提升项目很爱的UKCHO竞赛
UKChO英国化学竞赛,是由国英国皇家化学学会主办,迄今已有 50 年的历史,是英国历史很久、学术性很强、影响力很大的高中化学奥林匹克。
网络数据显示截止现在,中国已有近300所国际学校的选手参与此项赛事,与全球化学小能手同台竞争金银铜奖
对于目标排名靠前的孩子来说,参加并获得UKCHO奖项对于申请英国高校的化学及相关专业(如医药Biomed、生化Biochem等)有可能是极为加分的。
UKCHO考试时间
考试时间(以2022年为例):
2022年 1 月 22 日(周日)下午 14:00-16:00(120分钟)
比赛形式:
笔试,个人形式参赛
比赛题型:
五道左右的大题,每道题目下设有 3-10 个小问
2.This question is about bromine and its isotopes At room temperature,bromine exists as a red-brown liquid with an unpleasant smell.Bromine's smel is so unpleasant that the name bromine derives from the Ancient Greek word Bpwua which means stink.
On Earth,there are two common isotopes of bromine
50% of bromine atoms are bromine-7950% of bromine atoms are bromine-81
This means that molecuies containing bromine can have different masses.For example,diatomic bromine,Br has three possible masses:
Brmade of two bromine-79 atoms has a mass of 158
Brmade ofone bromine-79atom and one bromine-81 atom has a mass of 160 Br,made of two bromine-81 atoms has a mass of 162
(a)
(1) Calculate the probability that a Brmolecule has a mass of 158
(1i) Calculate the probability thata Brmolecule has a mass of 162
(il) Hence,calculate the probability that a Br,molecule has a mass of 160
Theimaginaryplanet Alpha-Zar contains the same isotopes of bromine as Earth,but in different abundances.On Alpha-Zar,36.0% of Brmolecules have a mass of 158.
(b)What are the abundances of bromine-79 and bromine-81 atoms on Alpha-Zar?
Back on Earth,bromine atoms and boron atoms can combine to form molecules of boron tribromide,BBr. On Earth,there are two common isotopes of boron
20%of boron atoms are boron-1080% of boron atoms are boron-11
↑留学机构背景提升类竞赛UKCHO真题↑
报名截止日期:
2021 年 1 月 12 日
UKCHO竞赛就介绍到这里啦。知名度高的比赛通常难度不会太低,涉及到的知识点往往非常繁多,方程式、反应条件、反应机理、实验现象等都需要花大量的时间准备,如果担心独自刷题效率有点低,可以点击这里预约试听【唯寻竞赛辅导班】——
AMC BPHO UKCHO BBO等主流竞赛均有课程
根据学员进度定制教学
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