中学生网络课堂本课配套习题挑战模式1/5
蒸馒头时，在发酵面团中加入某种物质，既能除去面团中的酸又能使馒头松软，该物质是（ ）
| A: 碳酸氢钠 |
| B: 生石灰 |
| C: 氢氧化钠 |
| D: 氯化钠 |
- 提示1：PHA+5qC55o2u54mp6LSo55qE55So6YCU6L+b6KGM5YiG5p6Q77yM56Kz6YW45rCi6ZKg6IO95LiO6Z2i5Zui5Y+R6YW15Lqn55Sf55qE6YW45Y+N5bqU55Sf5oiQ5LqM5rCn5YyW56Kz5L2/6aaS5aS05p2+6L2v77yM5Y+I6IO96Zmk5Y676YW4PGJyPjwvcD4=
- 答案：QQ==
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
本课配套习题挑战模式2/5
物质的用途与性质密切相关，下列说法正确的是（ ）
| A: 小苏打能作发酵粉，是因为小苏打能与面粉反应 |
| B: 洗洁精能洗去碗筷上的油污，是因为油污能溶于洗洁精 |
| C: 浓硫酸可用于作干燥剂，是因为浓硫酸具有吸水性 |
| D: 液氧可用于火箭发射，是因为氧气具有可燃性 |
- 提示1：PHA+54mp6LSo55qE5oCn6LSo5Yaz5a6a54mp6LSo55qE55So6YCU77yM5qC55o2u5bi46KeB54mp6LSo55qE5oCn6LSo5ZKM55So6YCU5YiG5p6QPGJyPjwvcD4=
- 答案：Qw==
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
本课配套习题挑战模式3/5
下列物质与熟石灰粉末混合研磨后，能闻到刺激性气味的是（ ）
| A: K2CO3 |
| B: CO（NH2）2 |
| C: NH4Cl |
| D: Ca3（PO4）2 |
- 提示1：PHA+5rOo5oSP6ZO155uQ5L2/55So5pe25LiN6IO95LiO56Kx5oCn54mp6LSo5re35ZCI5L2/55So77yM5Lya5Y+R55Sf5Y+N5bqU5Lqn55Sf5rCo5rCU6ZmN5L2O6IKl5pWIPGJyPjwvcD4=
- 答案：Qw==
PHA+6Kej77ya54af55+z54Gw5piv5LiA56eN56Kx77yM5pi+56Kx5oCn77yM5LiN6IO95LiO6ZO15oCB5rCu6IKl5re35ZCI5L2/55So77yOPGJyPuaVhemAiUM8YnI+PC9wPg==
本课配套习题挑战模式4/5
将珍珠加入稀盐酸中有气泡生成，生成的气体能使澄清石灰水变浑浊，则珍珠中含有下列离子中的（ ）
| A: |
| B: 碳酸根离子 |
| C: 硫酸根离子 |
| D: 氢氧根离子 |
- 提示1：PHA+5qC55o2u56Kz6YW455uQ6IO95LiO6YW45Y+N5bqU55Sf5oiQ6IO95L2/5r6E5riF55+z54Gw5rC05Y+Y5rWR5rWK55qE5LqM5rCn5YyW56Kz5rCU5L2T77yM5qOA6aqM56Kz6YW455uQ5pyA566A5Y2V55qE5pa55rOV5piv5ru05Yqg55uQ6YW477yM6KeC5a+f5piv5ZCm5pyJ6IO95L2/5r6E5riF55+z54Gw5rC05Y+Y5re35rWK55qE5rCU5L2T5Lqn55SfPGJyPjwvcD4=
- 答案：Qg==
PHA+6Kej77ya56Kz6YW455uQ5Lit5ZCr5pyJ56Kz6YW45qC556a75a2Q77yM56Kz6YW45qC556a75a2Q55qE5qOA6aqM5pa55rOV5piv77ya5bCG6K+l56Kz6YW455uQ5bCR6K645LqO6K+V566h5Lit77yM5Yqg5YWl5bCR6YeP56iA55uQ6YW477yM6KeC5a+f5Yiw5pyJ5rCU5rOh5Lqn55Sf77yb5bCG54+N54+g5pS+5YWl56iA55uQ6YW45Lit77yM5pyJ5rCU5rOh5Lqn55Sf77yM55Sf5oiQ55qE5rCU5L2T6IO95L2/5r6E5riF55qE55+z54Gw5rC05Y+Y5rWR5rWK77yM6K+05piO54+N54+g5Lit5ZCr5pyJ56Kz6YW45qC556a75a2Q77yM6K+05piO6K+l54mp6LSo5piv56Kz6YW455uQ77yOPGJyPuetlOahiO+8mkI8YnI+PC9wPg==
本课配套习题挑战模式5/5
下列推论正确的是（ ）
| A: 碳酸盐与盐酸反应放出气体，所以与盐酸反应放出气体的物质一定是碳酸盐 |
| B: 酸与碱反应生成盐和水，所以生成盐和水的反应一定是酸与碱的反应 |
| C: 燃烧都伴随着发光、放热，所以有发光、放热现象的就是燃烧 |
| D: 碱性溶液能使石蕊试液变蓝，所以能使石蕊试液变蓝的溶液呈碱性 |
- 提示1：PHA+5a+55LqO5o6o6K6655qE5q2j56Gu5LiO5ZCm55qE5YiG5p6Q77yM5pyA566A5rSB55qE5pa55byP5piv6YCa6L+H55u45bqU55qE5Y+N5L6L5p2l6K+B5piO5q2j56Gu5LiO5ZCmPC9wPg==
- 答案：RA==
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
