1.ง่าย
What is the term for anything that has mass and takes up space?
- AForce
- BEnergy
- CHeat
- DMatter
ใบงาน เคมีสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย
2.ง่าย
What are the building blocks (monomers) of proteins?
- ANucleotides
- BAmino acids
- CFatty acids
- DSimple sugars
3.ง่าย
What is the formula of sulfuric acid?
- AHCl
- BH₂SO₃
- CH₂SO₄
- DHNO₃
4.ปานกลาง
What is nuclear fission?
- AThe joining of two light nuclei to form a heavier nucleus
- BThe loss of electrons from an atom
- CThe burning of uranium in oxygen
- DThe splitting of a heavy nucleus into smaller nuclei
5.ปานกลาง
วัตถุมีมวล 50 g และปริมาตร 20 cm³ มีความหนาแน่นเท่าใด
- A0.4 g/cm³
- B1000 g/cm³
- C70 g/cm³
- D2.5 g/cm³
6.ปานกลาง
Which halogen is the most reactive?
- ABromine
- BIodine
- CFluorine
- DChlorine
7.ยาก
A salt is dissolved in water in an insulated cup, and the water temperature falls from 25 °C to 20 °C. Which statement is correct?
- ADissolving is endothermic; the dissolving salt took heat from the water
- BNo energy change occurred, because the temperature fell
- CDissolving is exothermic; the dissolving salt released heat into the water
- DDissolving is endothermic; the water took heat from the salt
8.ยาก
จงดุล __Fe + __O₂ → __Fe₂O₃ ด้วยจำนวนเต็มที่น้อยที่สุด สัมประสิทธิ์คือข้อใด
- A4, 3, 2
- B4, 3, 4
- C2, 1, 1
- D2, 3, 1
เฉลย
- 1. D · Matter
- 2. B · Amino acids
- 3. C · H₂SO₄
- 4. D · The splitting of a heavy nucleus into smaller nuclei
- 5. D · 2.5 g/cm³
- 6. C · Fluorine
- 7. A · Dissolving is endothermic; the dissolving salt took heat from the water
- 8. A · 4, 3, 2
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