Užduočių lapas tema Chemija slaugos stojamiesiems egzaminams su atsakymais

A blown-up balloon is put in a freezer. What happens to its volume?

1. AIt stays exactly the same
2. BThe balloon bursts
3. CIt decreases
4. DIt increases

Which two substances must be present for iron to rust?

1. ANitrogen and water
2. BOxygen and water
3. CCarbon dioxide and salt
4. DHydrogen and oxygen gas only

What range does the common pH scale cover?

1. A1 to 10
2. B0 to 14
3. C−7 to +7
4. D0 to 100

Which equation shows a combustion reaction?

1. AZn + CuSO₄ → ZnSO₄ + Cu
2. BNaOH + HCl → NaCl + H₂O
3. CC₂H₅OH + 3O₂ → 2CO₂ + 3H₂O
4. DCaCO₃ → CaO + CO₂

Which bond joins amino acids together in a protein?

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

Sulfur has 16 electrons. In which period of the periodic table is it?

1. APeriod 16
2. BPeriod 6
3. CPeriod 3
4. DPeriod 2

Subalansuokite __Fe + __O₂ → __Fe₂O₃ mažiausiais sveikaisiais skaičiais. Kokie koeficientai?

1. A4, 3, 4
2. B4, 3, 2
3. C2, 1, 1
4. D2, 3, 1

Why does a burn from steam at 100 °C usually cause more damage than one from liquid water at 100 °C?

1. ASteam particles are hotter than water particles at the same reading
2. BSteam releases a large amount of extra energy as it condenses on the skin
3. CLiquid water cannot pass any of its heat to the skin
4. DSteam carries dissolved acid that damages the skin