Chemia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

What is plasma, as a state of matter?

1. AThe liquid part of blood
2. BA liquid that has been cooled below its freezing point
3. CA very hot gas in which atoms have lost electrons and become ions
4. DA solid that conducts electricity

What is an alloy?

1. AA nonmetal that conducts electricity
2. BA mixture of a metal with one or more other elements
3. CA pure metal in its natural state
4. DA compound formed when a metal reacts with oxygen

What is the change from a gas directly to a solid, skipping the liquid state, called?

1. ASublimation
2. BFreezing
3. CCondensation
4. DDeposition

Which bond joins amino acids together in a protein?

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

Which element has the most metallic character?

1. AChlorine (Cl)
2. BCaesium (Cs)
3. CSodium (Na)
4. DAluminium (Al)

What is the mass of 0,5 mol of NaCl (molar mass 58,5 g/mol)?

1. A58,5 g
2. B0,5 g
3. C29,25 g
4. D117 g

Which coefficients balance the equation for cellular respiration, __C₆H₁₂O₆ + __O₂ → __CO₂ + __H₂O?

1. A1, 3, 6, 6
2. B1, 6, 6, 12
3. C2, 6, 12, 6
4. D1, 6, 6, 6

Magnesium burns as 2Mg + O₂ → 2MgO. What mass of MgO (40 g/mol) forms from 48 g of Mg (24 g/mol)?

1. A48 g
2. B40 g
3. C80 g
4. D160 g