Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

In a chemical reaction, what is the limiting reactant?

1. AThe catalyst that controls the speed
2. BThe reactant that runs out first and stops the reaction
3. CThe reactant with the largest mass
4. DThe reactant that is left over at the end

Deniz seviyesinde saf su kaç derecede kaynar?

1. A0 °C (32 °F)
2. B37 °C (98,6 °F)
3. C100 °C (212 °F)
4. D50 °C (122 °F)

Elements in the same period of the periodic table have the same number of what?

1. AProtons
2. BOccupied electron shells
3. CNeutrons
4. DValence electrons

Oxygen has 8 electrons. What is its electron configuration?

1. A1s² 2s² 2p⁶
2. B1s² 2p⁶
3. C1s² 2s⁶
4. D1s² 2s² 2p⁴

What is the molar mass of sulfuric acid, H₂SO₄ (H = 1, S = 32, O = 16 g/mol)?

1. A49 g/mol
2. B96 g/mol
3. C98 g/mol
4. D50 g/mol

How does a mixture of iron filings and sulfur powder differ from the compound iron sulfide?

1. AThe mixture is formed by a chemical reaction between the two elements
2. BThe mixture can be separated physically, for example with a magnet
3. CThe compound keeps the magnetic properties of iron
4. DThe mixture has a fixed ratio of iron to sulfur

Bir madde 801 °C'de eriyor, katı hâlde iletmiyor ama erimiş hâlde iletiyor. En olası olarak ne tür bir maddedir?

1. ABir metal
2. BBasit kovalent (moleküler) bir madde
3. CBir soy gaz
4. Dİyonik bir bileşik

A small amount of acid is spilled on a lab bench. Why is a weak base such as sodium bicarbonate preferred over strong NaOH to neutralise it?

1. ASodium bicarbonate is a strong acid that cancels the spill
2. BExcess sodium bicarbonate is far less harmful than excess NaOH
3. CSodium bicarbonate makes the spilled acid evaporate
4. DNaOH does not react with acids at room temperature