Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

Which state of matter has a fixed volume but takes the shape of its container?

1. APlasma
2. BSolid
3. CLiquid
4. DGas

Which group of biological molecules includes fats, oils and cholesterol?

1. ACarbohydrates
2. BNucleic acids
3. CLipids
4. DProteins

Tuzlu su hangi tür maddeye örnektir?

1. AHeterojen karışım
2. BBileşik
3. CHomojen karışım (çözelti)
4. DSaf element

Hangi ifade endotermik bir süreci tanımlar?

1. ANe enerji emer ne de verir
2. BIsı emer, bu yüzden çevre daha soğuk hissedilir
3. CIsı verir, bu yüzden çevre daha sıcak hissedilir
4. DYalnızca çok yüksek sıcaklıklarda gerçekleşir

How does a catalyst speed up a reaction?

1. AIt provides a different pathway with a lower activation energy
2. BIt adds extra reactant to the mixture
3. CIt makes the reaction more exothermic
4. DIt raises the temperature of the reactants so they move faster

How does dissolving salt in water affect the water's boiling point?

1. AIt raises the boiling point slightly
2. BIt lowers the boiling point slightly
3. CIt makes the water boil at room temperature
4. DIt has no effect on the boiling point

Klorun iki yaygın izotopu vardır: klor-35 (yaklaşık %75) ve klor-37 (yaklaşık %25). Ortalama atom kütlesi nedir?

1. AYaklaşık 36,5
2. BTam 35
3. CYaklaşık 35,5
4. DTam 36

Alpha radiation is stopped by skin, yet an alpha source is very dangerous if swallowed or inhaled. Why?

1. AAlpha particles turn into much more penetrating gamma rays once inside the body
2. BInside the body, alpha particles deposit all their energy in nearby living cells
3. CStomach acid makes the alpha source more radioactive
4. DAlpha particles are only produced at body temperature