1.Dễ
How many millilitres are in 1 litre?
- A10
- B10,000
- C100
- D1000
2.Dễ
In a solution, what is the solvent?
- AThe gas given off when a solid dissolves
- BThe substance that does the dissolving, usually present in the larger amount
- CThe substance that is dissolved, usually present in the smaller amount
- DAny solid that will not dissolve, however long it is stirred
3.Dễ
What is the SI base unit of mass?
- AKilogram
- BPound
- CNewton
- DGram
4.Trung bình
Which assumption is made about an ideal gas?
- AIts particles are large, closely packed and strongly attracted
- BIts particles stay still at room temperature
- CIts particles have no attraction to each other
- DIts particles lose energy in every collision
5.Trung bình
Oxygen has 8 electrons. What is its electron configuration?
- A1s² 2p⁶
- B1s² 2s² 2p⁶
- C1s² 2s² 2p⁴
- D1s² 2s⁶
6.Trung bình
Rubbing alcohol evaporates faster than water at room temperature. What does this suggest?
- AIts molecules are heavier than water molecules
- BIt has a higher boiling point than water
- CIts intermolecular forces are stronger than water's
- DIts intermolecular forces are weaker than water's
7.Khó
J.J. Thomson's cathode ray experiments led to which discovery?
- AThe nucleus contains uncharged neutrons
- BAtoms have a dense, positively charged nucleus
- CElectrons occupy fixed energy levels
- DAtoms contain small, negatively charged particles
8.Khó
Liên kết nào phân cực mạnh nhất?
- AH–F
- BH–H
- CC–H
- DCl–Cl
Đáp án
- 1. D · 1000
- 2. B · The substance that does the dissolving, usually present in the larger amount
- 3. A · Kilogram
- 4. C · Its particles have no attraction to each other
- 5. C · 1s² 2s² 2p⁴
- 6. D · Its intermolecular forces are weaker than water's
- 7. D · Atoms contain small, negatively charged particles
- 8. A · H–F
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