Робочий аркуш «Хімія для вступних іспитів на медсестринство» з відповідями

What range does the common pH scale cover?

1. A−7 to +7
2. B0 to 100
3. C1 to 10
4. D0 to 14

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

1. ASolid
2. BGas
3. CPlasma
4. DLiquid

What colour does blue litmus paper turn in an acid?

1. APurple
2. BBlue (no change)
3. CRed
4. DGreen

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

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

Which reacts more vigorously with water, potassium or sodium?

1. APotassium, because its outer electron is farther from the nucleus
2. BSodium, because it has fewer electron shells to shield its electron
3. CThey react equally, because both are in group 1
4. DSodium, because its outer electron is farther from the nucleus

How many molecules are in 2 mol of carbon dioxide?

1. A6,02 × 10²³
2. B1,20 × 10²⁴
3. C2,00 × 10²³
4. D3,01 × 10²³

Which 1-litre solution lowers the freezing point of water the most?

1. A1 M NaCl
2. B1 M CaCl₂
3. C0,5 M NaCl
4. D1 M glucose

10 g речовини розчиняють у воді, отримавши 250 mL розчину. Яка його концентрація в g/L?

1. A2,5 g/L
2. B0,04 g/L
3. C40 g/L
4. D25 g/L