ใบงาน เคมีสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย

Which form of sugar dissolves fastest in a cup of tea?

1. AA large lump of rock sugar
2. BGranulated sugar
3. CAll forms dissolve at the same rate
4. DA sugar cube

Which state of matter has a fixed volume but takes the shape of its container?

1. APlasma
2. BSolid
3. CLiquid
4. DGas

How is percent yield calculated?

1. A(Theoretical yield ÷ actual yield) × 100
2. BActual yield − theoretical yield
3. C(Mass of reactants ÷ mass of products) × 100
4. D(Actual yield ÷ theoretical yield) × 100

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. CWater enters the cell, which swells and may burst
4. DThe cell stays the same size and shape

เมื่อให้ความร้อนแก๊สในภาชนะปิดแข็ง ความดันของแก๊สจะเป็นอย่างไร

1. Aลดลง
2. Bลดลงเป็นศูนย์
3. Cเพิ่มขึ้น
4. Dคงเดิม

How many grams are in 2.5 kg?

1. A0.0025 g
2. B250 g
3. C25 g
4. D2500 g

Equal masses of sand and water sit in the sun and absorb the same amount of heat. Which warms up more, and why?

1. AWater, because it has a higher specific heat capacity than sand
2. BSand, because it has a lower specific heat capacity than water
3. CSand, because it has a higher specific heat capacity than water
4. DBoth warm equally, because they absorbed the same heat

สมการใดดุลถูกต้อง

1. ANa + Cl₂ → NaCl
2. B2Na + Cl₂ → NaCl₂
3. CNa + Cl → NaCl₂
4. D2Na + Cl₂ → 2NaCl