B\u00e0i th\u00ed nghi\u1ec7m \u1edf d\u1ea1ng th\u1ef1c nghi\u1ec7m n\u00ean s\u1ebd kh\u00f4ng c\u00f3 k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c gi\u1ed1ng nhau gi\u1eefa c\u00e1c h\u1ecdc sinh. K\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u00ed nghi\u1ec7m, qu\u00e1 tr\u00ecnh l\u00e0m th\u00ed nghi\u1ec7m v\u00e0 s\u1ef1 h\u1ee3p t\u00e1c gi\u1eefa c\u00e1c th\u00e0nh vi\u00ean nh\u00f3m th\u00ed nghi\u1ec7m.<\/p>\n
1. M\u1ed9t s\u1ed1 l\u01b0u \u00fd cho th\u00ed nghi\u1ec7m 1:<\/p>\n
– Khi l\u1ef1a ch\u1ecdn l\u00e1 c\u00e2y n\u00ean l\u1ef1a ch\u1ecdn \u1edf c\u1ea3 3 khu v\u1ef1c: l\u00e1 gi\u00e0 ph\u00eda g\u1ed1c c\u00e2y, l\u00e1 tr\u01b0\u1edfng th\u00e0nh \u1edf ph\u1ea7n gi\u1eefa c\u1ee7a th\u00e2n c\u00e2y v\u00e0 l\u00e1 non \u1edf ph\u1ea7n ng\u1ecdn c\u00e2y.<\/p>\n
– Khi c\u00f3 h\u01a1i n\u01b0\u1edbc tho\u00e1t ra qua c\u00e1c m\u1eb7t l\u00e1, h\u01a1i n\u01b0\u1edbc s\u1ebd t\u00e1c d\u1ee5ng v\u1edbi coban clorua l\u00e0m cho gi\u1ea5y chuy\u1ec3n sang m\u00e0u h\u1ed3ng. Di\u1ec7n t\u00edch c\u1ee7a khu v\u1ef1c gi\u1ea5y chuy\u1ec3n m\u00e0u h\u1ed3ng c\u00e0ng l\u1edbn th\u00ec t\u1ed1c \u0111\u1ed9 tho\u00e1t h\u01a1i n\u01b0\u1edbc c\u00e0ng cao.<\/p>\n
– So s\u00e1nh t\u1ed1c \u0111\u1ed9 tho\u00e1t h\u01a1i n\u01b0\u1edbc c\u1ee7a c\u00e1c lo\u1ea1i l\u00e1 v\u00e0 c\u00e1c m\u1eb7t l\u00e1 \u1edf c\u00f9ng m\u1ed9t kho\u1ea3ng th\u1eddi gian (3 ph\u00fat, 5 ph\u00fat, 30 ph\u00fat,\u2026)<\/p>\n
– Tuy\u1ec7t \u0111\u1ed1i trung th\u00e0nh v\u1edbi k\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m c\u1ee7a b\u1ea3n th\u00e2n ng\u01b0\u1eddi l\u00e0m th\u00ed nghi\u1ec7m.<\/p>\n
2. M\u1ed9t s\u1ed1 l\u01b0u \u00fd cho th\u00ed nghi\u1ec7m 2:<\/p>\n
Tuy\u1ec7t \u0111\u1ed1i trung th\u00e0nh v\u1edbi k\u1ebft qu\u1ea3 l\u00e0m th\u00ed nghi\u1ec7m c\u1ee7a b\u1ea3n th\u00e2n.<\/p>\n
B\u00e0i th\u00ed nghi\u1ec7m \u1edf d\u1ea1ng th\u1ef1c nghi\u1ec7m n\u00ean s\u1ebd kh\u00f4ng c\u00f3 k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c gi\u1ed1ng nhau gi\u1eefa c\u00e1c h\u1ecdc sinh. K\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u00ed nghi\u1ec7m, qu\u00e1 tr\u00ecnh l\u00e0m th\u00ed nghi\u1ec7m v\u00e0 s\u1ef1 h\u1ee3p t\u00e1c gi\u1eefa c\u00e1c th\u00e0nh vi\u00ean nh\u00f3m th\u00ed nghi\u1ec7m. 1. M\u1ed9t s\u1ed1 […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1324],"tags":[1486,1485],"yoast_head":"\n