Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

What is the name for the attraction of water molecules to each other?

1. ADiffusion
2. BOsmosis
3. CCohesion
4. DAdhesion

Which gas is needed for a fuel to burn (combustion)?

1. ANitrogen
2. BHelium
3. CCarbon dioxide
4. DOxygen

In which state are most metals at room temperature?

1. APlasma
2. BGas
3. CSolid
4. DLiquid

Why does keeping food in a refrigerator slow down spoilage?

1. ALower temperatures raise the activation energy of every reaction
2. BLower temperatures slow down chemical and microbial reactions
3. CCold temperatures add preservatives to the food
4. DCold air contains no oxygen

For the gas reaction N₂ + 3H₂ ⇌ 2NH₃, what is the effect of increasing the pressure?

1. AThere is no effect on the equilibrium
2. BThe NH₃ breaks down completely
3. CThe equilibrium shifts to the left, toward N₂ and H₂
4. DThe equilibrium shifts to the right, toward NH₃

Glucose has the molecular formula C₆H₁₂O₆. What is its empirical formula?

1. AC₆H₁₂O₆
2. BCHO
3. CCH₂O
4. DC₂H₄O₂

In the Bohr model, what happens when an electron drops from a higher energy level to a lower one?

1. AEnergy is released, often as light
2. BEnergy is absorbed from the surroundings
3. CThe electron leaves the atom
4. DThe atom gains a proton

2 mol H₂ ve 2 mol O₂ karıştırılıyor ve 2H₂ + O₂ → 2H₂O olarak tepkimeye giriyor. Hangi giren sınırlayıcıdır?

1. AHidrojen, çünkü 2 mol H₂ yalnızca 1 mol O₂ kullanır
2. BSu, çünkü üründür
3. COksijen, çünkü oksijen hidrojenden azdır
4. DHiçbiri, çünkü miktarlar eşittir