Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

Tuzlu su hangi tür maddeye örnektir?

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

How is percent yield calculated?

1. AActual yield − theoretical yield
2. B(Actual yield ÷ theoretical yield) × 100
3. C(Mass of reactants ÷ mass of products) × 100
4. D(Theoretical yield ÷ actual yield) × 100

Aşağıdakilerden hangisi kimyasal değişimdir?

1. AŞekerin çayda çözünmesi
2. BCamın kırılması
3. CBuzun erimesi
4. DOdunun yanması

Why does ice float on liquid water?

1. AIce is denser than liquid water
2. BIce has a higher mass than the same volume of water
3. CIce contains trapped air from the freezer
4. DIce is less dense than liquid water

Radioactive iodine (iodine-131) is used to treat some thyroid conditions. Why does it reach the thyroid?

1. AIodine is strongly attracted to the metal ions stored in the neck
2. BIodine-131 is not radioactive inside the body
3. CThe thyroid gland takes up iodine to make its hormones
4. DRadiation is always drawn toward the head

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 36 g dissolves and about 14 g stays undissolved
3. CAbout 14 g dissolves and about 36 g stays undissolved
4. DNone of the salt dissolves

Aşağıdakilerden hangisi zayıf bir asittir?

1. ASülfürik asit
2. BHidroklorik asit
3. CAsetik asit (sirkede)
4. DNitrik asit

In the reaction NH₃ + H₂O ⇌ NH₄⁺ + OH⁻, which substance acts as the Brønsted–Lowry acid?

1. AOH⁻
2. BH₂O
3. CNH₄⁺ only
4. DNH₃