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

According to the Arrhenius definition, what does a base produce in water?

1. ACarbonate ions (CO₃²⁻)
2. BHydroxide ions (OH⁻)
3. CChloride ions (Cl⁻)
4. DHydrogen ions (H⁺)

Between which kinds of elements do ionic bonds usually form?

1. ATwo nonmetals
2. BA metal and a nonmetal
3. CTwo noble gases
4. DTwo identical metals

What are the building blocks (monomers) of proteins?

1. AAmino acids
2. BSimple sugars
3. CFatty acids
4. DNucleotides

During digestion, large molecules are broken down by adding water across their bonds. What is this reaction called?

1. APolymerisation
2. BHydrolysis
3. CCondensation
4. DCombustion

Що відбувається з температурою крижаної води, поки лід тане?

1. AВона падає нижче 0 °C
2. BВона постійно рівномірно зростає
3. CВона одразу зростає до 100 °C
4. DВона залишається 0 °C, доки весь лід не розтане

Water climbs up a narrow glass tube. Which property mainly causes this?

1. AAdhesion of water to the glass
2. BEvaporation of water from the tube
3. CWater's high boiling point
4. DLow density of water

Which of these is a redox reaction?

1. AZn + CuSO₄ → ZnSO₄ + Cu
2. BAgNO₃ + NaCl → AgCl + NaNO₃
3. CCaCO₃ → CaO + CO₂
4. DNaOH + HCl → NaCl + H₂O

Marble chips react with hydrochloric acid, giving off CO₂. The gas is produced quickly at first, then more and more slowly. Why does the rate fall?

1. AThe acid concentration falls as it is used up, so collisions become less frequent
2. BThe activation energy steadily increases as the reaction goes on
3. CThe CO₂ produced turns back into acid
4. DThe products act as a catalyst that slows the reaction down