解答つき看護学校入学試験のための化学ワークシート

Apart from mercury, which element is a liquid at room temperature?

1. AChlorine
2. BBromine
3. CIodine
4. DSodium

What is the molar mass of oxygen gas, O₂ (O = 16 g/mol)?

1. A16 g/mol
2. B48 g/mol
3. C8 g/mol
4. D32 g/mol

イオンとは何か。

1. A他の原子より原子核の中性子が多い原子
2. B電子をもたない粒子
3. C電荷をもつ原子または原子団
4. D同じ原子 2 個でできた分子

How can you get solid salt back from salt water?

1. AFreeze the solution and lift out the salt
2. BUse a magnet
3. CFilter the solution
4. DEvaporate the water

When a nucleus emits a beta particle, how do its mass number and atomic number change?

1. AMass number rises by 1 and atomic number stays the same
2. BMass number stays the same and atomic number rises by 1
3. CBoth fall by 1
4. DMass number falls by 4 and atomic number falls by 2

Water climbs up a narrow glass tube. Which property mainly causes this?

1. AAdhesion of water to the glass
2. BLow density of water
3. CEvaporation of water from the tube
4. DWater's high boiling point

How does a rise in temperature affect how much carbon dioxide gas can dissolve in a soft drink?

1. ATemperature has no effect on gas solubility
2. BThe gas turns into a solid at higher temperature
3. CMore gas dissolves, so warm drinks stay fizzy for longer
4. DLess gas dissolves, so warm drinks go flat faster

A scuba diver breathes compressed air deep underwater. Why must the diver breathe out while swimming up to the surface?

1. AThe air in the lungs expands as the outside pressure falls
2. BOxygen turns to liquid at the surface
3. CThe air in the lungs shrinks as the outside pressure falls
4. DThe water gets warmer near the surface