Mavzu: modda va uning xossalari


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7-sinf laboratoriya ishlari

2-Laboratoriya ishi: ODDIY VA MURAKKAB MODDALAR NAMUNALARI BILAN TANISHISH.
Maqsad: o'quvchilarda oddiy va murakkab moddalarni bir-biridan ajrata olish, ularning fizik xossalarini tavsiflash hamda malaka ko'nikmalarini shakllantirish.
Jihozlar: yuvgich (1), probirka (2), probirkalar uchun shtativ (3), shisha tayoqcha (4), plastmassa shpatel (5), shisha stakan (6), rezina tiqinlar (7), tomchi analizi uchun to'plam (8), bug'latish kosachasi (9). plastik taglik (10), tomchi analizi uchun planshet (11).
Reaktivlar: temir granulalari, alyuminiy granulalari, mis granulalari, rux granulalari, mis (Il)-oksid, natriy xlorid, temir oksidi.
O'quv-ko'rgazmali qo'llanmalar: kimyodan plakatlar to'plami «Anorganik moddalar tasnifi» № 1, «Oddiy moddalar», «Metallar» kolleksiyalari.Jihozlar to'plami«Oddiy moddalar»kolleksiyalari


Ishni bajarish tartibi:

  1. Laboratoriya ishini bajarish uchun olingan moddalar bilan tanishiladi.

  2. Ularning tashqi ko'rinishi hamda fizik xossalari o'rganiladi.

  3. Bu moddalarning fizik xossalari - ko'rsatkichlari yozib olinadi.

  4. Keltirilgan moddalar ichidan oddiy va murakkab moddalar ajratiladi va tomchi analiz uchun planshetiga solinib, nomlari daftarga yozib olinadi.

  5. O ddiy moddalardan metallar va metallarga mansub bo'lmaganlar ajratiladi, nomlar daftarga ko'chiriladi.

Nazorat uchun savollar:

  1. Oddiy moddalar deb nimaga aytiladi?

  2. Murakkab moddalarni ta'riflang.

  3. Metallarni oddiy moddalar qatoriga kiritish mumkinmi?

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