Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

Bir çözeltinin pH değeri 3'tür. Nasıl tanımlanır?

1. ANötr
2. BAsidik
3. CDoygun
4. DBazik

What is plasma, as a state of matter?

1. AA liquid that has been cooled below its freezing point
2. BA solid that conducts electricity
3. CThe liquid part of blood
4. DA very hot gas in which atoms have lost electrons and become ions

What is the change from a liquid to a solid called?

1. ACondensation
2. BEvaporation
3. CMelting
4. DFreezing

Water has a high specific heat capacity. How does this help the human body?

1. AIt helps keep body temperature stable
2. BIt makes water a poor solvent for salts
3. CIt makes the blood more acidic
4. DIt allows oxygen to dissolve in water more easily

Why does the vapour pressure of a liquid increase as it is heated?

1. AThe attractions between the molecules become stronger
2. BMore molecules have enough energy to escape into the gas phase
3. CThe liquid's volume decreases and squeezes out vapour
4. DThe molecules become heavier and press harder on the surface

Vinegar contains acetic acid, CH₃COOH. Which functional group makes it an acid?

1. AThe methyl group, –CH₃
2. BThe amino group, –NH₂
3. CThe hydroxyl group of an alcohol, –OH
4. DThe carboxyl group, –COOH

Which substance has the lowest boiling point?

1. ASodium chloride
2. BHelium
3. CIron
4. DWater

Which list puts fluorine, chlorine and bromine in order of increasing electronegativity?

1. AF < Cl < Br
2. BBr < F < Cl
3. CCl < Br < F
4. DBr < Cl < F