Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

How does increasing the concentration of a reactant in solution usually affect the reaction rate?

1. AThe reaction stops
2. BThe rate stays the same
3. CThe rate decreases
4. DThe rate increases

A + B → AB tepkimesi hangi tür tepkimeyi gösterir?

1. ABirleşme (sentez) tepkimesi
2. BTek yer değiştirme tepkimesi
3. CAyrışma tepkimesi
4. DYanma tepkimesi

How is percent yield calculated?

1. AActual yield − theoretical yield
2. B(Mass of reactants ÷ mass of products) × 100
3. C(Actual yield ÷ theoretical yield) × 100
4. D(Theoretical yield ÷ actual yield) × 100

Glucose has the molecular formula C₆H₁₂O₆. What is its empirical formula?

1. ACHO
2. BC₂H₄O₂
3. CCH₂O
4. DC₆H₁₂O₆

Sulfur has 16 electrons. In which period of the periodic table is it?

1. APeriod 16
2. BPeriod 6
3. CPeriod 3
4. DPeriod 2

How is 0,00045 written in scientific notation?

1. A4,5 × 10⁻³
2. B4,5 × 10⁴
3. C4,5 × 10⁻⁵
4. D4,5 × 10⁻⁴

J.J. Thomson's cathode ray experiments led to which discovery?

1. AThe nucleus contains uncharged neutrons
2. BAtoms have a dense, positively charged nucleus
3. CElectrons occupy fixed energy levels
4. DAtoms contain small, negatively charged particles

Bir elementin elektron dizilişi 2, 8, 7'dir. En olası olarak hangi iyonu oluşturur?

1. A1+ yüklü bir iyon
2. B1− yüklü bir iyon
3. C7+ yüklü bir iyon
4. D2− yüklü bir iyon