Робочий аркуш «Хімія для вступних іспитів на медсестринство» з відповідями

Which electrons take part in chemical bonding?

1. AOnly the electrons in the first shell
2. BAll electrons take part equally
3. CThe valence (outermost) electrons
4. DThe electrons closest to the nucleus

What is a solution?

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

До якої групи належать натрій і калій?

1. AГалогени (група 17)
2. BЛужні метали (група 1)
3. CЛужноземельні метали (група 2)
4. DБлагородні гази (група 18)

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

1. AC₂H₄O₂
2. BCH₂O
3. CCHO
4. DC₆H₁₂O₆

A solution has a pH of 10. What is its pOH at 25 °C?

1. A10
2. B14
3. C24
4. D4

At STP (0 °C and 1 atm), what volume does 1 mole of an ideal gas occupy?

1. A6,02 L
2. B1,0 L
3. C273 L
4. D22,4 L

A liquid has a density of 1,2 g/mL. What is the mass of 250 mL of this liquid?

1. A208 g
2. B30 g
3. C300 g
4. D251,2 g

Йон має 12 протонів і 10 електронів. Що це за йон?

1. ANe
2. BNa⁺
3. CMg²⁻
4. DMg²⁺