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

At sea level, at what temperature does pure water freeze?

1. A32 °C (90 °F)
2. B−32 °C (−26 °F)
3. C0 °C (32 °F)
4. D100 °C (212 °F)

A cleaning solution has a pH of 12. How is it described?

1. AStrongly acidic
2. BNeutral
3. CWeakly acidic
4. DStrongly basic

Apart from mercury, which element is a liquid at room temperature?

1. ABromine
2. BChlorine
3. CIodine
4. DSodium

When mercury(II) oxide is heated, it reacts as 2HgO → 2Hg + O₂. What type of reaction is this?

1. ASynthesis
2. BDecomposition
3. CCombustion
4. DSingle replacement

On an energy diagram, the products are at a lower energy than the reactants. What kind of reaction is shown?

1. AExothermic
2. BNuclear
3. CEndothermic
4. DReversible only

Which list is in order from smallest to largest mass?

1. AKilogram, gram, milligram
2. BGram, milligram, kilogram
3. CMilligram, kilogram, gram
4. DMilligram, gram, kilogram

A carboxylic acid reacts with an alcohol in the presence of an acid catalyst. What are the products?

1. AAn alkane and oxygen
2. BA salt and hydrogen
3. CAn amino acid and carbon dioxide
4. DAn ester and water

Na⁺, Mg²⁺, F⁻ and O²⁻ all have 10 electrons. Which ion is the largest?

1. AMg²⁺
2. BNa⁺
3. CF⁻
4. DO²⁻