护理入学考试化学练习卷（附答案）

What is the change from a gas to a liquid called?

1. ASublimation
2. BFreezing
3. CCondensation
4. DEvaporation

Where are the metalloids found on the periodic table?

1. AIn group 18, at the far right edge of the table
2. BAlong the staircase line between the metals and the nonmetals
3. CIn the two separate rows at the bottom of the table
4. DIn group 1, at the far left edge of the table

What are the units of molarity?

1. AGrams of solute per litre of solution (g/L)
2. BGrams of solute per 100 g of solution
3. CMoles of solute per kilogram of the solvent used
4. DMoles of solute per litre of solution (mol/L)

Which gas forms when hydrochloric acid reacts with calcium carbonate?

1. ACarbon dioxide
2. BOxygen
3. CHydrogen
4. DChlorine

Zn + 2HCl → ZnCl₂ + H₂ 是哪种类型的反应？

1. A置换反应
2. B分解反应
3. C复分解反应
4. D合成反应

At 20 °C, about 36 g of NaCl dissolves in 100 g of water. If 50 g of NaCl is stirred into 100 g of water at 20 °C, what happens?

1. ANone of the salt dissolves
2. BAll 50 g dissolves
3. CAbout 14 g dissolves and about 36 g stays undissolved
4. DAbout 36 g dissolves and about 14 g stays undissolved

A nurse wipes a patient's arm with an alcohol swab and the patient says the skin feels cold. What explains this?

1. AThe alcohol reacts with the skin in an endothermic chemical reaction
2. BThe alcohol absorbs heat from the skin as it evaporates
3. CThe alcohol blocks the skin's nerve endings for warmth
4. DThe alcohol is stored at a much lower temperature than the room

下列哪种溶液导电性最好？

1. A溶于水的氯化钠
2. B与水混合的乙醇
3. C纯蒸馏水
4. D溶于水的糖