Lembaran kerja Kimia untuk peperiksaan kemasukan kejururawatan dengan jawapan

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

What do the letters STP stand for in gas chemistry?

1. AStable temperature point
2. BSpecific temperature and particles
3. CStandard temperature and pressure
4. DStandard time and pressure

Where do the mole ratios used in stoichiometry come from?

1. AThe molar masses of the reactants
2. BThe coefficients of the balanced equation
3. CThe physical states of the substances
4. DThe subscripts in each formula

A student tests how temperature affects the rate of a reaction. What is the independent variable?

1. AThe temperature
2. BThe volume of acid, which is kept the same
3. CThe type of beaker used
4. DThe reaction rate

A plastic block has a density of 0.8 g/cm³. What happens when it is placed in water (density 1.0 g/cm³)?

1. AIt sinks
2. BIt floats
3. CIt dissolves
4. DIt stays suspended halfway down

Pernyataan manakah menghuraikan proses endotermik?

1. AIa menyerap haba, jadi persekitaran terasa lebih sejuk
2. BIa membebaskan haba, jadi persekitaran terasa lebih hangat
3. CIa tidak menyerap mahupun membebaskan sebarang tenaga
4. DIa berlaku hanya pada suhu yang sangat tinggi

A solution contains 250 mg of a substance in every 5 mL. How many grams of the substance are in 100 mL?

1. A0.5 g
2. B50 g
3. C5 g
4. D5000 g

Why does a burn from steam at 100 °C usually cause more damage than one from liquid water at 100 °C?

1. ASteam carries dissolved acid that damages the skin
2. BSteam particles are hotter than water particles at the same reading
3. CLiquid water cannot pass any of its heat to the skin
4. DSteam releases a large amount of extra energy as it condenses on the skin