7 szkoły podstawowej

8 szkoły podstawowej

Chemia w zadaniach i przykładach. Zbiór zadań dla klas 7 i 8 szkoły podstawowej.

Chemia

Chemia 7

Chemia 7 i 8

Chemia Nowej Ery 7

Ciekawa chemia 7

Świat chemii 7

1. tlenek węgla(II) - E - d

a)&nbsp; SnO2​+2H2​→Sn+2H2​O &nbsp; b)&nbsp; SnO2​+2C→Sn+2CO &nbsp;

a) MgCO3​ T<svg xmlns="http://www.w3.org/2000/svg" width='400em' height='0.522em' viewBox='0 0 400000 522' preserveAspectRatio='xMaxYMin slice'><path d='M0 241v40h399891c-47.3 35.3-84 78-110 128
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a)&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/be430295b1fa20f0b594e89575e37cc51f762ebe19dc8abbff736d98a5bc6a38_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/be430295b1fa20f0b594e89575e37cc51f762ebe19dc8abbff736d98a5bc6a38_big.svg" type="image/svg+xml"></object> &nbsp; b)&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/32e3198d3620943e71e9c85a64516428b392cf54c8ef0fc9de3f3af254694dc7_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/32e3198d3620943e71e9c85a64516428b392cf54c8ef0fc9de3f3af254694dc7_big.svg" type="image/svg+xml"></object> &nbsp;

a) <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/6a049f4451badbdd00189ed645ddf93b645586e4a39d58cc3f1b38c915b17d97_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/6a049f4451badbdd00189ed645ddf93b645586e4a39d58cc3f1b38c915b17d97_big.svg" type="image/svg+xml"></object> &nbsp; b)&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/9bda71ca8ec7b972325dbe69632d6236e05898e88cccfa785a8cb8d68cc4c97d_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/9bda71ca8ec7b972325dbe69632d6236e05898e88cccfa785a8cb8d68cc4c97d_big.svg" type="image/svg+xml"></object> &nbsp;

a) 1.&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/eb376aededf02ba56902b1e0852234aa168716166872215ccbc136a082b5e70b_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/eb376aededf02ba56902b1e0852234aa168716166872215ccbc136a082b5e70b_big.svg" type="image/svg+xml"></object> &nbsp; 2.&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/16b29245396cdde1cfe2f542898857403519ad1a49f807e068e32683f24f6556_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/16b29245396cdde1cfe2f542898857403519ad1a49f807e068e32683f24f6556_big.svg" type="image/svg+xml"></object> &nbsp; 3.&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/e207a244bbb5ebc8b7b7f571b114679d04671f9500d56041e6c7ed6b9e4e5be7_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/e207a244bbb5ebc8b7b7f571b114679d04671f9500d56041e6c7ed6b9e4e5be7_big.svg" type="image/svg+xml"></object> &nbsp; b) 1.&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/955b5644cc0b61b9ca4f117568b96e45a774b1e9b7cdcd4d3df5f8dd2543ab45_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/955b5644cc0b61b9ca4f117568b96e45a774b1e9b7cdcd4d3df5f8dd2543ab45_big.svg" type="image/svg+xml"></object> &nbsp; 2.&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/3743910ee811a170b0fa89b1448151ca3fba94d81042b48fddc52b12ac937ed9_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/3743910ee811a170b0fa89b1448151ca3fba94d81042b48fddc52b12ac937ed9_big.svg" type="image/svg+xml"></object> &nbsp; 3. &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/728fcc23acd561938ad74891e590115c44678129d824d5139fb20777d305f1bd_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/728fcc23acd561938ad74891e590115c44678129d824d5139fb20777d305f1bd_big.svg" type="image/svg+xml"></object> &nbsp;&nbsp; c) 1.&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/9b67eeb1bf77569533a90635abdeb9db56aece8c7971295d771de62b92577547_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/9b67eeb1bf77569533a90635abdeb9db56aece8c7971295d771de62b92577547_big.svg" type="image/svg+xml"></object> &nbsp; 2. &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/14e8935bd44f4cdef903e396f868b8004303659ca9d6ae2cbbb7dd356cd75e23_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/14e8935bd44f4cdef903e396f868b8004303659ca9d6ae2cbbb7dd356cd75e23_big.svg" type="image/svg+xml"></object> &nbsp; 3.&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/7c6e0cad66e5cc82b8d440ab1878bead1d2249d741f9f807e091e7b447cfe26d_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/7c6e0cad66e5cc82b8d440ab1878bead1d2249d741f9f807e091e7b447cfe26d_big.svg" type="image/svg+xml"></object> &nbsp; d) 1.&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/1e8c44074711dcaa9eaf33f05c04058f69401076441dc5699e163ff893194863_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/1e8c44074711dcaa9eaf33f05c04058f69401076441dc5699e163ff893194863_big.svg" type="image/svg+xml"></object> &nbsp; 2.&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/7643bd2a1246fe456e1f06f814c248ad25762f9657356f5e5107cc1b76e7555e_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/7643bd2a1246fe456e1f06f814c248ad25762f9657356f5e5107cc1b76e7555e_big.svg" type="image/svg+xml"></object> &nbsp; 3.&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/c0a62e479dc8eda3735a90f6b925d43614cfb9d66e5fd30de4f391ab217ec908_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/c0a62e479dc8eda3735a90f6b925d43614cfb9d66e5fd30de4f391ab217ec908_big.svg" type="image/svg+xml"></object> &nbsp;

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