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"5%& U+0  " "5%& G s  U+0  1 U"5%& L+0  X U"5%& 1+0  15%& 1+0  X "5%& "+0  T5%& 1U+0 1X5%&   HƯỚNG DẪN CHẤM CHI TIÊ ́ T BÀI KIỂM TRA MÔ ̣ T TIÊ ́ T MÔN: HÓA HỌC - LỚP 8 – NĂM HỌC 2010 - 2011 !"#$ I. Phần trắc nghiệm:(3 điểm) Mỗi câu đúng 0,25 điểm. 0 1 B L ! " T U  M 1X 11 1B -- ;    ;  ;     ; II. Phần tự luận (7 điểm). Câu 1: (2 điểm) ; !'WP B  → B' B P ^X "5%&` Y68'P B ' B Px!1B ^X "5%&` > !;6WLP B  → B;6 B P L   ^X "5%&` Y68;6P B ;6 B P L x!LB ^X "5%&` Câu 2: (2 điểm) ; gOWB6gO6 B W B ^X "5%&` > B;6WT6B;66 L WL B ^X "5%&`  BqWP B X t → BqP ^X "5%&`  P B WB B X t → B B P ^X "5%&` Câu 3: (2.5 điểm) )++E.$ → ).)$W+E.5.)$  P L → PWP B ;  L B CaCO CaO CO m m m= + ^X U"5%&` >  L 1"X 1BX BUX^ ` CaCO m kg= + = ^X U"5%&`   L BUX y 1XXy MXy LXX CaCO = = ^15%&` Câu 4: (0.5 điểm) B;6WB'PWB B P → B';6P B WL B ^X "5%&` . - 2011 !"#$ I. Phần trắc nghiệm:(3 điểm) Mỗi câu đúng 0 ,25 điểm. 0 1 B L ! " T U  M 1X 11 1B -- ;    ;  ;     ;