Chemistry for nursing entrance exams worksheet with answers

Where are the transition metals located on the periodic table?

1. AAbove the noble gases
2. BIn the central block, groups 3 to 12
3. CIn group 1 on the far left
4. DIn group 18 on the far right

What is a dilute solution?

1. AOne with a large amount of solute in a little solvent
2. BOne with a small amount of solute in a lot of solvent
3. COne with no solvent at all
4. DOne in which the solute has reacted with the solvent

What is the change from a solid directly to a gas called?

1. AMelting
2. BCondensation
3. CDeposition
4. DSublimation

In 2KClO₃ → 2KCl + 3O₂, how many moles of O₂ form from 4 mol of KClO₃?

1. A3 mol
2. B6 mol
3. C8 mol
4. D4 mol

Which list is in order from smallest to largest mass?

1. AGram, milligram, kilogram
2. BMilligram, kilogram, gram
3. CKilogram, gram, milligram
4. DMilligram, gram, kilogram

Water has a high specific heat capacity. How does this help the human body?

1. AIt helps keep body temperature stable
2. BIt makes water a poor solvent for salts
3. CIt makes the blood more acidic
4. DIt allows oxygen to dissolve in water more easily

A strip of magnesium is burned in air and the white ash weighs more than the original strip. Why?

1. AMass was created during the reaction
2. BMagnesium atoms became heavier when heated
3. CThe ash absorbed water from the flame
4. DOxygen from the air has combined with the magnesium

Samples of hydrogen gas (H₂) and oxygen gas (O₂) are at the same temperature. Which statement is correct?

1. AO₂ molecules move faster because they are heavier
2. BH₂ molecules have more kinetic energy and move faster
3. CBoth move at the same average speed
4. DThey have the same average kinetic energy, but H₂ molecules move faster