ورقة عمل الكيمياء لامتحانات القبول في التمريض مع الإجابات

Which mixture is a suspension?

1. AOxygen dissolved in water
2. BSand stirred into water
3. CSugar dissolved in water
4. DSalt dissolved in water

What are the building blocks (monomers) of proteins?

1. AAmino acids
2. BNucleotides
3. CSimple sugars
4. DFatty acids

What is the change from a gas directly to a solid, skipping the liquid state, called?

1. ADeposition
2. BSublimation
3. CCondensation
4. DFreezing

What is a polymer?

1. AAn ion with more than one charge
2. BA large molecule built from many repeating smaller units called monomers
3. CA mixture of several different elements
4. DA small molecule containing only two atoms of one element

ما شحنة أيون الكلوريد؟

1. A+7
2. B−1
3. C−2
4. D+1

At STP (0 °C and 1 atm), what volume does 1 mole of an ideal gas occupy?

1. A6,02 L
2. B1,0 L
3. C22,4 L
4. D273 L

في 2H₂ + O₂ → 2H₂O، تتفاعل 4 g من الهيدروجين (الكتلة المولية 2 g/mol) مع أكسجين وفير. ما كتلة الماء المتكوّنة (الكتلة المولية 18 g/mol)؟

1. A4 g
2. B18 g
3. C72 g
4. D36 g

What is the percentage by mass of nitrogen in ammonium nitrate, NH₄NO₃ (N = 14, H = 1, O = 16; molar mass 80 g/mol)?

1. A60%
2. B17,5%
3. C35%
4. D28%