1.やさしい
What is oxidation, in terms of electrons?
- AGain of neutrons
- BGain of electrons
- CLoss of electrons
- DLoss of protons
2.やさしい
What are the units of molarity?
- AMoles of solute per kilogram of the solvent used
- BGrams of solute per litre of solution (g/L)
- CGrams of solute per 100 g of solution
- DMoles of solute per litre of solution (mol/L)
3.やさしい
原子の中で正の電荷をもつ粒子はどれか。
- A光子
- B陽子
- C電子
- D中性子
4.ふつう
吸熱過程を説明しているのはどれか。
- Aエネルギーを吸収も放出もしない
- B熱を放出するため、周囲が温かく感じられる
- C熱を吸収するため、周囲が冷たく感じられる
- D非常に高い温度でしか起こらない
5.ふつう
Rubbing alcohol evaporates faster than water at room temperature. What does this suggest?
- AIt has a higher boiling point than water
- BIts intermolecular forces are weaker than water's
- CIts molecules are heavier than water molecules
- DIts intermolecular forces are stronger than water's
6.ふつう
Which of these is a colloid?
- ASalt water
- BSand in water
- CPure water
- DMilk
7.むずかしい
1 本の銅線の中にある結合はどの種類か。
- A銅と塩化物イオンの間のイオン結合
- B銅原子どうしの水素結合
- C2 つの原子だけの間で電子対を共有する共有結合
- D金属結合:電子の海の中のイオン
8.むずかしい
Many ethene (C₂H₄) molecules join together to form poly(ethene), a plastic. What type of reaction is this?
- AHydrolysis, in which water breaks each monomer apart
- BAddition polymerisation, in which the C=C double bonds open up to link the monomers
- CCondensation polymerisation, in which a water molecule is released at each new link
- DCombustion, in which ethene reacts with oxygen
解答
- 1. C · Loss of electrons
- 2. D · Moles of solute per litre of solution (mol/L)
- 3. B · 陽子
- 4. C · 熱を吸収するため、周囲が冷たく感じられる
- 5. B · Its intermolecular forces are weaker than water's
- 6. D · Milk
- 7. D · 金属結合:電子の海の中のイオン
- 8. B · Addition polymerisation, in which the C=C double bonds open up to link the monomers
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