Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

Atomlar arasında elektronlar paylaşıldığında hangi tür bağ oluşur?

1. ANükleer bağ
2. BKovalent bağ
3. CMetalik bağ
4. Dİyonik bağ

What does organic chemistry study?

1. ACompounds based on carbon
2. BCompounds made of metals
3. COnly compounds found in plants
4. DOnly the noble gases

Where do the mole ratios used in stoichiometry come from?

1. AThe physical states of the substances
2. BThe subscripts in each formula
3. CThe molar masses of the reactants
4. DThe coefficients of the balanced equation

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

1. A68 g/mol
2. B100 g/mol
3. C116 g/mol
4. D84 g/mol

What is the name of the molecular compound CO?

1. AMonocarbon oxide
2. BCarbon dioxide
3. CCarbon oxide
4. DCarbon monoxide

Sert, kapalı bir kapta bir gaz ısıtıldığında basıncına ne olur?

1. AArtar
2. BAzalır
3. CSıfıra düşer
4. DAynı kalır

A small amount of acid is spilled on a lab bench. Why is a weak base such as sodium bicarbonate preferred over strong NaOH to neutralise it?

1. ASodium bicarbonate is a strong acid that cancels the spill
2. BNaOH does not react with acids at room temperature
3. CExcess sodium bicarbonate is far less harmful than excess NaOH
4. DSodium bicarbonate makes the spilled acid evaporate

A mixture contains sand, salt and water. Which sequence separates all three?

1. ADistil first to remove the sand, then filter out the salt
2. BEvaporate all the water first, then filter the salt away from the dry sand
3. CUse a magnet to remove the salt, then filter the sand
4. DFilter to remove the sand, then distil the filtrate to collect water and leave salt