ورقة عمل الكيمياء لامتحانات القبول في التمريض مع الإجابات

How many millilitres are in 1 litre?

1. A10,000
2. B10
3. C100
4. D1000

Which three elements make up carbohydrates?

1. AHydrogen, nitrogen and phosphorus
2. BCarbon, hydrogen and oxygen
3. CCarbon, hydrogen and nitrogen
4. DCarbon, nitrogen and sulfur

What is the smallest particle of an element that still has the chemical properties of that element?

1. AAn electron
2. BA nucleus
3. CA proton
4. DAn atom

An exothermic reaction is at equilibrium. What happens if the temperature is raised?

1. AThe reaction becomes endothermic
2. BThe equilibrium shifts toward the products, raising the yield
3. CThe equilibrium does not change
4. DThe equilibrium shifts toward the reactants

What is the molar mass of calcium carbonate, CaCO₃ (Ca = 40, C = 12, O = 16 g/mol)?

1. A116 g/mol
2. B84 g/mol
3. C68 g/mol
4. D100 g/mol

How many moles of gas are in 44,8 L at STP (0 °C and 1 atm)?

1. A2 mol
2. B44,8 mol
3. C22,4 mol
4. D0,5 mol

In the reaction NaCl(aq) + AgNO₃(aq) → AgCl(s) + NaNO₃(aq), which ions are spectator ions?

1. ANa⁺ and Cl⁻
2. BAg⁺ and NO₃⁻
3. CAg⁺ and Cl⁻
4. DNa⁺ and NO₃⁻

How much water must be added to 50 mL of a 10% solution to make a 2% solution?

1. A100 mL
2. B40 mL
3. C250 mL
4. D200 mL