Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

What is activation energy?

1. AThe total energy released once the reaction has finished
2. BThe minimum energy reacting particles need for a reaction to happen
3. CThe energy stored in the products
4. DThe energy needed to melt a solid

Sodyum klorürü (sofra tuzu) bir arada tutan bağ türü hangisidir?

1. AKovalent bağ
2. BMetalik bağ
3. CHidrojen bağı
4. Dİyonik bağ

Between which kinds of elements do covalent bonds usually form?

1. ATwo nonmetals
2. BA metal and a nonmetal
3. CA metal and a noble gas
4. DTwo group 1 metals

Which statement describes a saturated fat?

1. AIts fatty acid chains have many carbon–carbon double bonds
2. BIts fatty acid chains have no carbon–carbon double bonds
3. CIt is always liquid at room temperature
4. DIt contains no carbon atoms

Which is larger, a sodium atom (Na) or a sodium ion (Na⁺)?

1. AThey are the same size
2. BIt depends on the temperature
3. CThe sodium ion
4. DThe sodium atom

Which element has chemical properties most similar to calcium?

1. ACarbon
2. BScandium
3. CMagnesium
4. DPotassium

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

Equal masses of sand and water sit in the sun and absorb the same amount of heat. Which warms up more, and why?

1. AWater, because it has a higher specific heat capacity than sand
2. BBoth warm equally, because they absorbed the same heat
3. CSand, because it has a lower specific heat capacity than water
4. DSand, because it has a higher specific heat capacity than water