解答つき看護学校入学試験のための化学ワークシート

What causes the pressure of a gas in a container?

1. AThe weight of the container pressing on the gas inside
2. BGas particles colliding with the container walls
3. CGas particles sticking to the walls
4. DGas particles stopping and pushing outward

現代の周期表では、元素はどのように並べられているか。

1. A原子番号の順
2. B中性子数の順
3. C発見された日付の順
4. D元素記号のアルファベット順

水の化学式はどれか。

1. AHO₂
2. BH₂O
3. CH₂O₂
4. DOH

A radioactive isotope has a half-life of 5 days. A sample starts with 80 g. How much is left after 10 days?

1. A0 g
2. B10 g
3. C40 g
4. D20 g

A red blood cell is placed in a concentrated (hypertonic) salt solution. What happens?

1. ASalt leaves the cell, which swells
2. BWater leaves the cell, which shrinks
3. CThe cell stays the same size and shape
4. DWater enters the cell, which swells and may burst

0.5 mol of KCl is dissolved to make 250 mL of solution. What is its molarity?

1. A0.125 M
2. B0.5 M
3. C2 M
4. D125 M

Pepsin digests protein in the stomach at about pH 2, but it stops working once food moves into the small intestine, where the pH is higher. Why?

1. AThe small intestine is too cold for any enzyme
2. BPepsin is used up completely in the stomach, just like a reactant
3. CPepsin only works on fats in the small intestine
4. DThe change in pH alters the shape of pepsin's active site

1 M のHClと 1 M のNaOHを同じ体積ずつ混ぜた。結果のpHはおよそいくつか。

1. A7
2. B14
3. C1
4. D3.5