Chemistry for nursing entrance exams worksheet with answers

What does the rate of a reaction measure?

1. AHow much product forms in total by the end
2. BHow hot the reaction gets
3. CHow much energy the final products contain
4. DHow quickly reactants are used up or products are formed

Which state of matter has neither a fixed shape nor a fixed volume?

1. AGas
2. BSolid
3. CLiquid
4. DCrystal

What is a solution?

1. AA mixture in which particles settle out on standing
2. BA pure compound made of two elements
3. CA solid that has been melted
4. DA mixture that is the same throughout (homogeneous)

What is the density of an object with a mass of 50 g and a volume of 20 cm³?

1. A0.4 g/cm³
2. B70 g/cm³
3. C1000 g/cm³
4. D2.5 g/cm³

What feature makes a hydrocarbon an alkene?

1. AAt least one carbon–carbon double bond
2. BAn –OH group
3. COnly carbon–carbon single bonds
4. DA ring of six carbon atoms with no hydrogen

Why must temperatures be in kelvin in gas law calculations?

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

Under which conditions does a real gas behave least like an ideal gas?

1. AHigh temperature and large container
2. BLow pressure and low volume of particles
3. CLow pressure and high temperature
4. DHigh pressure and low temperature

A solution of a strong acid has pH 2. It is diluted with water to 10 times its original volume. What is the new pH?

1. A1
2. B0.2
3. C3
4. D20