ใบงาน เคมีสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย

What is gamma radiation?

1. AA fast stream of protons from the nucleus
2. BA slow-moving electron
3. CA stream of helium nuclei with a positive charge
4. DHigh-energy electromagnetic radiation with no mass or charge

At sea level, at what temperature does pure water freeze?

1. A32 °C (90 °F)
2. B0 °C (32 °F)
3. C−32 °C (−26 °F)
4. D100 °C (212 °F)

Which property is typical of bases?

1. AThey feel slippery
2. BThey have a pH below 7
3. CThey taste sour
4. DThey turn blue litmus red

มวลโมลาร์ของน้ำคือเท่าใด (H = 1 g/mol, O = 16 g/mol)

1. A17 g/mol
2. B32 g/mol
3. C18 g/mol
4. D10 g/mol

อุณหภูมิที่สูงขึ้นมักส่งผลต่อปริมาณของแข็งที่ละลายในน้ำอย่างไร

1. Aของแข็งกลายเป็นแก๊ส
2. Bของแข็งละลายได้มากขึ้น
3. Cไม่มีผลต่อของแข็ง
4. Dของแข็งละลายได้น้อยลง

Why do group 1 metals such as sodium react so easily?

1. AThey easily gain one extra electron
2. BThey have one outer electron that is easily lost
3. CThey have a full outer shell of electrons
4. DTheir nuclei contain no neutrons

In the fission reaction ²³⁵U + ¹n → ¹⁴¹Ba + ⁹²Kr + ? ¹n, how many neutrons are released?

1. A4
2. B1
3. C3
4. D2

Cells oxidise glucose to CO₂ and water, as burning glucose does. How does cellular respiration differ from burning?

1. AIt releases much more total energy than burning the same glucose
2. BIt releases the energy in many small, enzyme-controlled steps
3. CIt produces different products from burning
4. DIt does not need oxygen at any stage