Užduočių lapas tema Chemija slaugos stojamiesiems egzaminams su atsakymais

Nemokamas spausdinamas užduočių lapas tema Chemija slaugos stojamiesiems egzaminams: 8 uždavinių nuo lengvų iki egzamino lygio, su atsakymais. Atsispausdinkite arba išsaugokite kaip PDF.

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Vardas: ____________________   Data: ____________

1.Lengvas

What is an unsaturated solution?

  1. AA solution that can still dissolve more solute
  2. BA solution with no solute at all
  3. CA solution with undissolved solid at the bottom
  4. DA solution that holds the maximum possible solute
2.Lengvas

What does the coefficient 3 in "3H₂O" mean?

  1. AThere are three molecules (or moles) of water
  2. BWater has a charge of 3
  3. CEach water molecule has three oxygen atoms
  4. DEach molecule of water contains three hydrogen atoms
3.Lengvas

In a solution, what is the solvent?

  1. AThe gas given off when a solid dissolves
  2. BAny solid that will not dissolve, however long it is stirred
  3. CThe substance that is dissolved, usually present in the smaller amount
  4. DThe substance that does the dissolving, usually present in the larger amount
4.Vidutinis

A room is at 25 °C. What is this temperature in kelvin?

  1. A298 K
  2. B−248 K
  3. C248 K
  4. D77 K
5.Vidutinis

Uranium-235 and uranium-238 both have 92 protons. How many more neutrons does an atom of uranium-238 have?

  1. A0
  2. B146
  3. C3
  4. D92
6.Vidutinis

What charge do group 16 elements such as oxygen and sulfur usually have as ions?

  1. A6+
  2. B2+
  3. C2−
  4. D1−
7.Sunkus

What is the formula of calcium phosphate, made from Ca²⁺ and PO₄³⁻ ions?

  1. ACaPO₄
  2. BCa₃PO₄
  3. CCa₂(PO₄)₃
  4. DCa₃(PO₄)₂
8.Sunkus

An unknown element is shiny, conducts electricity, and reacts vigorously with water to form a basic solution and hydrogen gas. In which group is it most likely?

  1. AGroup 1 (alkali metals)
  2. BGroup 18 (noble gases)
  3. CGroup 14 (carbon group)
  4. DGroup 17 (halogens)

Atsakymai

  1. 1. A · A solution that can still dissolve more solute
  2. 2. A · There are three molecules (or moles) of water
  3. 3. D · The substance that does the dissolving, usually present in the larger amount
  4. 4. A · 298 K
  5. 5. C · 3
  6. 6. C · 2−
  7. 7. D · Ca₃(PO₄)₂
  8. 8. A · Group 1 (alkali metals)

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