Scheda di esercizi di Chimica per i test di ammissione a infermieristica con soluzioni

What is a hydrocarbon?

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

What is radioactivity?

1. AThe release of radiation by unstable atomic nuclei
2. BThe release of heat and light when fuels burn in air
3. CThe flow of electrons through a metal wire
4. DThe glow produced by any hot object

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

In a reaction at equilibrium, a product is continuously removed. What happens?

1. AMore product keeps forming as the equilibrium shifts to the right
2. BThe reaction rate drops to zero
3. CThe equilibrium shifts to the left to form more reactants
4. DThe reactants run out immediately

How many covalent bonds does a carbon atom usually form?

1. A1
2. B2
3. C3
4. D4

Which bond joins amino acids together in a protein?

1. AA hydrogen bond
2. BA peptide bond
3. CA glycosidic bond
4. DAn ionic bond

A piece of copper is placed in zinc sulfate solution. Zinc is more reactive than copper. What happens?

1. ACopper replaces zinc, forming copper sulfate
2. BNo reaction occurs
3. CHydrogen gas is produced
4. DZinc metal coats the copper and the solution turns blue

A scuba diver breathes compressed air deep underwater. Why must the diver breathe out while swimming up to the surface?

1. AThe water gets warmer near the surface
2. BOxygen turns to liquid at the surface
3. CThe air in the lungs shrinks as the outside pressure falls
4. DThe air in the lungs expands as the outside pressure falls