护理入学考试化学练习卷（附答案）

What is a horizontal row of the periodic table called?

1. AA family
2. BA period
3. CA group
4. DA block

What causes the pressure of a gas in a container?

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

What is the half-life of a radioactive isotope?

1. AHalf the time it takes for all the atoms to decay
2. BThe time taken for half of the radioactive atoms in a sample to decay
3. CThe time taken for the mass of a sample to double in size
4. DHalf the number of protons in the nucleus

Which list is in order from smallest to largest mass?

1. AKilogram, gram, milligram
2. BMilligram, kilogram, gram
3. CGram, milligram, kilogram
4. DMilligram, gram, kilogram

哪种改变会使一块粉笔与酸反应得更快？

1. A把粉笔研磨成粉末
2. B把酸放进冰箱冷却
3. C用更多水稀释酸
4. D使用一大块粉笔

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. AAbout 14 g dissolves and about 36 g stays undissolved
2. BNone of the salt dissolves
3. CAbout 36 g dissolves and about 14 g stays undissolved
4. DAll 50 g dissolves

A sealed bag of crisps (potato chips) packed at sea level looks puffed up when it is carried to a high mountain. Why?

1. AThe outside air pressure is lower, so the gas inside expands
2. BMore gas is produced by the crisps at altitude
3. CThe gas inside the bag is heated strongly by the mountain sunlight
4. DThe bag becomes thinner and weaker at altitude

Zinc reacts as Zn + 2HCl → ZnCl₂ + H₂. What mass of zinc (65 g/mol) reacts completely with 50 mL of 2 M HCl?

1. A6.5 g
2. B65 g
3. C1.63 g
4. D3.25 g