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IB Chemistry

Topic #1: Stoichiometric Relationships

> Introduction to the particulate nature of matter and chemical change
> The mole concept
> Reacting masses and volumes

Topic #2: Atomic Structure

> The nuclear atom
> Electron configuration

Topic #3: Periodicity

> Periodic table
> Periodic trends

Topic #4: Chemical Bonding and Structure

> Ionic bonding and structure
> Covalent bonding
> Covalent structures
> Intermolecular forces
> Metallic bonding

Q. Pearson-3.2-10

Which of the following changes is endothermic?
I Ca(g) → Ca+(g) + e–
II I(g) + e– → I–(g)
III O– + e– → O2–(g)
✓
X 해석 : Electron affinity involves formation of bond that releases energy

Which is the best definition of electronegativity?
✓
X 해석 : Electronegativity of the ability of an atom to attract a bonding pair to itself.

Which properties of the Period 3 elements increase from sodium to argon:
✓
X 해석 : Atomic radius decreases across period

Which physical property generally increases down a group but decreases from left to right across a period
✓
X 해석 : Atomic radius decreases across period

Which property increases down Group 1 from lithium to caesium?
✓
X 해석 : Outer electron is further away from the nuclear and easier to be lost

이유상

Periodic trend와 관련해 더 도움을 받고 싶어요. 선생님은 어떻게 찾을 수 있을까요?

2018. 04. 05. 금요일 오후 2시 45분
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그루미 선생님

제가 도와드릴 수 있습니다. http://gurume.kr/teachers/14 제 프로필을 참고해주세요! (옆 주소를 복사해 주소에 붙여넣기 하시면 됩니다.)

2018. 04. 05. 금요일 오후 3시 45분
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김유상

Periodic trend, 잘 몰랐던 주제인데 체계화된 수업과 질문모음집으로 도움이 많이 되었어요! ^^

2018. 04. 05. 금요일 오후 4시 45분
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