Chemistry for nursing entrance exams worksheet with answers

What range does the common pH scale cover?

1. A−7 to +7
2. B0 to 14
3. C0 to 100
4. D1 to 10

How are the elements arranged in the modern periodic table?

1. ABy increasing number of neutrons
2. BAlphabetically by their symbols
3. CBy increasing atomic number
4. DBy the date they were discovered

Which two substances must be present for iron to rust?

1. ANitrogen and water
2. BCarbon dioxide and salt
3. CHydrogen and oxygen gas only
4. DOxygen and water

According to the kinetic molecular theory, what does temperature measure?

1. AThe total number of particles
2. BThe average kinetic energy of the particles
3. CThe size of the container
4. DThe mass of each particle

Why must temperatures be in kelvin in gas law calculations?

1. AKelvin values are always below 100
2. BGas volume and pressure are proportional to the absolute temperature
3. CThe kelvin scale has smaller degrees, which gives more precise answers
4. DCelsius can only be used for liquids

What is the normal boiling point of a liquid?

1. AThe temperature at which its vapour pressure equals 1 atmosphere
2. BThe temperature at which its particles stop moving
3. CThe temperature at which it first starts to evaporate
4. DThe temperature at which its density is greatest

A catalyst is added to an exothermic reaction. How does the energy diagram change?

1. AThe reactants start at a higher energy
2. BThe products end up at a lower energy, so more heat is released
3. CThe reaction becomes endothermic
4. DThe peak is lower, but the energy of reactants and products stays the same

How does a rise in temperature affect how much carbon dioxide gas can dissolve in a soft drink?

1. ATemperature has no effect on gas solubility
2. BLess gas dissolves, so warm drinks go flat faster
3. CThe gas turns into a solid at higher temperature
4. DMore gas dissolves, so warm drinks stay fizzy for longer