Chemia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

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

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

What is a solution?

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

For a given substance, in which state do its particles move fastest?

1. AThey move at the same speed in all states
2. BLiquid
3. CGas
4. DSolid

Glucose has the molecular formula C₆H₁₂O₆. What is its empirical formula?

1. AC₂H₄O₂
2. BC₆H₁₂O₆
3. CCH₂O
4. DCHO

Rozcieńczasz 100 mL roztworu 2 M do łącznej objętości 400 mL. Jakie jest nowe stężenie?

1. A8 M
2. B2 M
3. C1 M
4. D0,5 M

During digestion, large molecules are broken down by adding water across their bonds. What is this reaction called?

1. AHydrolysis
2. BCombustion
3. CPolymerisation
4. DCondensation

100 mL of 1 M NaCl is mixed with 100 mL of 3 M NaCl. What is the concentration of the mixture?

1. A3 M
2. B4 M
3. C2 M
4. D1,5 M

A catalyst is added to an exothermic reaction. How does the energy diagram change?

1. AThe reaction becomes endothermic
2. BThe products end up at a lower energy, so more heat is released
3. CThe reactants start at a higher energy
4. DThe peak is lower, but the energy of reactants and products stays the same