1.やさしい
Which group contains the alkaline earth metals, such as magnesium and calcium?
- AGroup 17
- BGroup 2
- CGroup 1
- DGroup 18
2.やさしい
pHが 3 の溶液は、どう表されるか。
- A塩基性
- B中性
- C飽和
- D酸性
3.やさしい
反応 A + B → AB は、どの種類の反応か。
- A燃焼
- B分解
- C単置換
- D合成(化合)
4.ふつう
Potassium forms K⁺ ions and sulfur forms S²⁻ ions. What is the name and formula of their compound?
- APotassium sulfate, K₂SO₄
- BPotassium sulfide, KS₂
- CPotassium sulfide, K₂S
- DPotassium sulfite, KS
5.ふつう
カルシウム(Ca²⁺)と塩素(Cl⁻)の間にできる化合物はどれか。
- ACa₂Cl
- BCaCl₂
- CCaCl
- DCa₂Cl₃
6.ふつう
メタンなどの炭化水素が完全燃焼したときの生成物は何か。
- A酸素と水
- B炭素と水素ガス
- C一酸化炭素と水素
- D二酸化炭素と水
7.むずかしい
J.J. Thomson's cathode ray experiments led to which discovery?
- AElectrons occupy fixed energy levels
- BAtoms have a dense, positively charged nucleus
- CAtoms contain small, negatively charged particles
- DThe nucleus contains uncharged neutrons
8.むずかしい
Steel can be protected from rusting by coating it with zinc (galvanising). Why does the steel stay protected even if the zinc coating is scratched?
- AZinc turns the iron into a noble metal
- BZinc is less reactive than iron, so it pushes oxygen and water away from the iron
- CZinc is more reactive than iron, so it corrodes instead of the iron
- DZinc absorbs all the water from the air
解答
- 1. B · Group 2
- 2. D · 酸性
- 3. D · 合成(化合)
- 4. C · Potassium sulfide, K₂S
- 5. B · CaCl₂
- 6. D · 二酸化炭素と水
- 7. C · Atoms contain small, negatively charged particles
- 8. C · Zinc is more reactive than iron, so it corrodes instead of the iron
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