Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

Which acid is found in the stomach?

1. AHydrochloric acid
2. BNitric acid
3. CAcetic acid
4. DSulfuric acid

Which unit is commonly used for the density of a liquid?

1. AmL/g
2. Bg/mL
3. Ckg
4. Dg·mL

What is the normal pH range of human arterial blood?

1. A6,35 to 6,45
2. B7,00 to 7,10
3. C7,35 to 7,45
4. D7,85 to 7,95

Oksijen gazı (O₂) molekülünde ne tür bir bağ bulunur?

1. AApolar kovalent çift bağ
2. BPolar kovalent tek bağ
3. CMetalik bağ
4. Dİyonik bağ

Daha yüksek sıcaklık, bir katının suda ne kadar çözüneceğini genellikle nasıl etkiler?

1. ADaha az katı çözünür
2. BDaha fazla katı çözünür
3. CKatı gaza dönüşür
4. DKatılar üzerinde etkisi yoktur

At 20 °C, about 36 g of NaCl dissolves in 100 g of water. If 50 g of NaCl is stirred into 100 g of water at 20 °C, what happens?

1. AAll 50 g dissolves
2. BAbout 14 g dissolves and about 36 g stays undissolved
3. CNone of the salt dissolves
4. DAbout 36 g dissolves and about 14 g stays undissolved

Which statement correctly distinguishes a scientific law from a scientific theory?

1. AA law describes what happens; a theory explains why it happens
2. BA theory becomes a law once it is proved
3. CA law is only a guess, while a theory is a proven fact
4. DLaws apply only to chemistry, theories only to biology

Raising the temperature by 10 °C can roughly double the rate of many reactions. What is the main reason?

1. AThe reaction becomes more exothermic
2. BThe activation energy itself is lowered by the extra heat
3. CThe particles become larger and easier to hit
4. DMany more collisions have at least the activation energy