Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

According to the kinetic molecular theory, how do gas particles move?

1. ASlowly in fixed positions
2. BConstantly, randomly and in straight lines between collisions
3. COnly when heated, and then in neat lines between the walls
4. DAlways in a single direction, set by the pull of gravity

Which element makes up the largest share of the human body by mass?

1. ACarbon
2. BOxygen
3. CHydrogen
4. DNitrogen

Which element is a metalloid?

1. AArgon
2. BSulfur
3. CSodium
4. DSilicon

Why does oxygen move from the alveoli of the lungs into the blood?

1. AOxygen is heavier than carbon dioxide
2. BOxygen is pumped actively into the blood
3. CThe partial pressure of oxygen is higher in the blood than in the alveoli
4. DThe partial pressure of oxygen is higher in the alveoli than in the blood

2H₂ + O₂ → 2H₂O tepkimesinde 3 mol oksijenden kaç mol su oluşur?

1. A6 mol
2. B3 mol
3. C2 mol
4. D1,5 mol

When mercury(II) oxide is heated, it reacts as 2HgO → 2Hg + O₂. What type of reaction is this?

1. ASynthesis
2. BSingle replacement
3. CCombustion
4. DDecomposition

The true volume in a flask is 10,0 mL. A student measures it three times and gets 8,1 mL, 8,1 mL and 8,2 mL. How are these results best described?

1. ABoth accurate and precise
2. BAccurate but not precise
3. CNeither accurate nor precise
4. DPrecise but not accurate

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