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10
×
除了石蕊试纸,还有什么材料可以用来测试物质的酸碱性?
紫甘蓝菜汁
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10
×
只有紫甘蓝菜汁可以测试物质的酸碱性。(对/错)
错
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10
×
当紫甘蓝菜汁被倒入碱性的物质中,会变成什么颜色?
青色/黄色/绿色
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10
×
紫甘蓝菜是一种天然的材料。它可以用来测试物质的酸碱性。(对/错)
对
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lifesaver
Give 20 points!
Oops!
×
shark
Other team loses 20 points!
Okay!
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rocket
Go to first place!
Okay!
×
lifesaver
Give 20 points!
Oops!
10
×
当加入紫甘蓝菜汁时,烧杯P中的液体变成深绿色了。以下哪种物质是烧杯P中的物质?(A. 食油 B. 小苏打水 C. 白醋)
B
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20
×
为什么紫甘蓝菜可以被使用来测试物质的酸碱性?
因为紫甘蓝菜中含有花青素。
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seesaw
Swap points!
Oops!
×
rocket
Go to first place!
Okay!
×
gift
Win 15 points!
Okay!
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baam
Lose 5 points!
Oops!
10
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哪项物质会使紫甘蓝菜汁变红?(A.汽水 B. 眼药水 C. 胃药 D. 漂白剂)
A
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heart
Other team wins 25 points!
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star
Double points!
Okay!
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fairy
Take points!
5
10
15
20
25
×
banana
Go to last place!
Oops!
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seesaw
Swap points!
Oops!
×
seesaw
Swap points!
Okay!
×
fairy
Take points!
5
10
15
20
25
×
baam
Lose 15 points!
Oops!
10
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当紫甘蓝菜汁被倒入柠檬汁时,会变成什么颜色?
红色
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10
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当紫甘蓝菜汁被倒入蒸馏水中时,会变成什么颜色?
保持一样/还是紫色
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10
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哪项物质会使紫甘蓝菜汁保持紫色?(A. 酸柑汁 B. 食油 C. 可口可乐 D. 肥皂)
B
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