Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

What is a hydrocarbon?

1. AA carbon atom with a positive charge
2. BA compound made of hydrogen and oxygen
3. CA compound made of only hydrogen and carbon
4. DAny compound that dissolves in water

An instant cold pack feels cold when the substance inside dissolves. How is this dissolving process classified?

1. AEndothermic
2. BExothermic
3. CA neutralisation reaction
4. DA combustion reaction

Which electrons take part in chemical bonding?

1. AThe valence (outermost) electrons
2. BThe electrons closest to the nucleus
3. COnly the electrons in the first shell
4. DAll electrons take part equally

Bir oksijen atomunun kaç değerlik (dış kabuk) elektronu vardır?

1. A8
2. B2
3. C6
4. D16

Potassium forms K⁺ ions and sulfur forms S²⁻ ions. What is the name and formula of their compound?

1. APotassium sulfate, K₂SO₄
2. BPotassium sulfite, KS
3. CPotassium sulfide, KS₂
4. DPotassium sulfide, K₂S

Which reacts more vigorously with water, potassium or sodium?

1. ASodium, because it has fewer electron shells to shield its electron
2. BPotassium, because its outer electron is farther from the nucleus
3. CSodium, because its outer electron is farther from the nucleus
4. DThey react equally, because both are in group 1

A gas occupies 4 L at 2 atm and 200 K. What is its volume at 1 atm and 400 K?

1. A8 L
2. B16 L
3. C1 L
4. D4 L

Why does a burn from steam at 100 °C usually cause more damage than one from liquid water at 100 °C?

1. ALiquid water cannot pass any of its heat to the skin
2. BSteam particles are hotter than water particles at the same reading
3. CSteam carries dissolved acid that damages the skin
4. DSteam releases a large amount of extra energy as it condenses on the skin