2016年5月IB化学SL真题下载-Paper1
1. Which equation represents sublimation?
A. 2Al (s) + 3I2 (g) → 2AlI3 (s)
B. HgCl2 (s) → HgCl2 (g)
C. I2 (g) → I2 (s)
D. CaCO3 (s) + 2HCl (aq) → CaCl2 (aq) + CO2 (g) + H2O (l)
2. For which compound is the empirical formula the same as the molecular formula?
3. In which mixture is NaOH the limiting reagent?
A. 0.20 mol NaOH + 0.10 mol H2SO4
B. 0.10 mol NaOH + 0.10 mol H2SO4
C. 0.20 mol NaOH + 0.10 mol HNO3
D. 0.10 mol NaOH + 0.10 mol HNO3
4. Why do gases deviate from the ideal gas law at high pressures?
A. Molecules have finite volume.
B. Cohesive forces increase the volume from the ideal.
C. Increasing pressure increases the temperature of the gas.
D. Collisions between molecules occur more frequently as pressure increases.
5. Which is correct for the chromium isotope 24
53Cr?
A. 24 neutrons and 53 nucleons
B. 24 protons and 29 nucleons
C. 24 protons and 29 neutrons
D. 24 electrons and 53 neutrons
6. Which electron configuration is correct for the selenide ion, Se2−?
A. 1s2 2s2 2p6 3s2 3p6 4s2 4d10 4p4
B. 1s2 2s2 2p6 3s2 3p6 4s2 4d10 4p6
C. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4
D. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6
7. Which element is a metalloid?
A. Co
B. As
C. Cs
D. Es
8. Which periodic trend is described correctly?
9. Which molecule is non-polar?
A. OF2
B. NH3
C. BF3
D. SO2
10. Which compound contains both ionic and covalent bonds?
A. SiH4
B. NaNO3
C. H2CO
D. Na2S
2016年5月IB化学SL真题余下省略！
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