chemistry lesson

Control work # 4 on the topic "Substances and their properties" - SUBSTANCES AND their PROPERTIES - LESSON PLANS in CHEMISTRY 11 class-lesson plans-lesson plans-author's lessons-plan-lesson summary - chemistry

Lesson objectives: check the level of comprehension of the topic's key questions.

Equipment: tests of 2 levels of difficulty.

Lesson progress

I. Organizational moment

Instruction on the implementation of control work on options.

II. Completing a test paper

Option

1. Атомwhat element Atom has an electronic configuration of the atom: 1S²2S²2P⁶3S²3P⁶4S¹? Write down the formula of its oxide and hydroxide, specify their nature. Draw up equations of reactions (at least two) confirming their chemical properties.

2. Make up the reaction equations of the transformation scheme:

3. Make a genetic series of substances, write reaction equations, specify the names of substances and conditions for the flow of chemical reactions:

4. Draw up the IB interaction equationsCA with H₂SO₄(K) and C with H₂SO₄(K).

5. To solve the problem:

What mass of zinc sulfate can be obtained by reacting 13 g of zinc with a solution of sulfuric acid weighing 245 g, W_H2SO4= 10 %.

Answers to test questions

1. 1s²2s²2p⁶3s²3p⁶4s¹.

The fourth energy level ⇒of the fourth period element has been opened; at the external level, there is one s-electron ⇒of the first group, since it is the s-element ⇒of the main subgroup. This is potassium K.

Potassium oxide — salt- forming, basic oxide; potassium hydroxide-CON-base, oxygen-containing, monoacid, soluble, non-volatile, strong, stable.

2)y = 25 mol Zn is required, and given 0.2 mol ⇒ × Zn is insufficient. The calculation is based on a lack.

Answer: m_ZnSO= 32.2 g.