Chemistry for nursing entrance exams worksheet with answers

What is an unsaturated solution?

1. AA solution with undissolved solid at the bottom
2. BA solution that can still dissolve more solute
3. CA solution that holds the maximum possible solute
4. DA solution with no solute at all

What is a hydrocarbon?

1. AA compound made of only hydrogen and carbon
2. BA carbon atom with a positive charge
3. CA compound made of hydrogen and oxygen
4. DAny compound that dissolves in water

What is the normal pH range of human arterial blood?

1. A7.85 to 7.95
2. B7.00 to 7.10
3. C6.35 to 6.45
4. D7.35 to 7.45

What kind of bond is found in a molecule of oxygen gas, O₂?

1. AA metallic bond
2. BAn ionic bond
3. CA nonpolar covalent double bond
4. DA polar covalent single bond

What are hydrogen bonds?

1. AIonic bonds between hydrogen ions and metals
2. BBonds inside the nucleus of hydrogen
3. CAttractions between a hydrogen on one molecule and an O, N or F atom on another
4. DCovalent bonds between two hydrogen atoms in H₂

How does electronegativity change going down a group?

1. AIt increases
2. BIt decreases
3. CIt doubles with each period
4. DIt stays the same

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

1. A5000 g
2. B0.5 g
3. C50 g
4. D5 g

A substance melts at 801 °C, does not conduct as a solid but conducts when molten. What type of substance is it most likely?

1. AA noble gas
2. BA simple covalent (molecular) substance
3. CA metal
4. DAn ionic compound