解答つき看護学校入学試験のための化学ワークシート

Which of these is a chemical property?

1. ADensity
2. BFlammability
3. CBoiling point
4. DColour

What is an electrolyte?

1. AA substance that forms ions and conducts electricity when dissolved in water
2. BA gas that dissolves in blood
3. CA metal that conducts electricity as a solid
4. DA substance that dissolves as whole molecules without forming any ions

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

1. AIodine
2. BSodium
3. CChlorine
4. DBromine

2 M の溶液 100 mL を、全体の体積が 400 mL になるまで希釈した。新しい濃度はいくつか。

1. A8 M
2. B0.5 M
3. C1 M
4. D2 M

During digestion, large molecules are broken down by adding water across their bonds. What is this reaction called?

1. ACombustion
2. BHydrolysis
3. CPolymerisation
4. DCondensation

pH 3 の溶液は、pH 5 の溶液と比べてどうか。

1. A水素イオンが 2 倍多い
2. B水素イオンの数が同じ
3. C水素イオンが 100 分の 1 しかない
4. D水素イオンが 100 倍多い

A student tests whether water temperature affects how fast sugar dissolves. Which set of factors should be kept the same in every trial?

1. ANothing, because changing several factors at once gives more useful data
2. BThe water temperature and the dissolving time
3. COnly the colour of the cup
4. DThe mass of sugar, the type of sugar, the volume of water and the amount of stirring

Sulfuric acid reacts with sodium hydroxide: H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O. How many moles of NaOH neutralise 0.5 mol of H₂SO₄?

1. A2 mol
2. B0.25 mol
3. C1 mol
4. D0.5 mol