试卷类型:A
2023年陕西省初中学业水平考试·全真模拟卷(三)
化学试卷参考答案及评分标准
一、选择题(共9小题,每小题2分,计18分。每小题只有一个选项是符合题意的)
1.D2.C3.A4.B5.D6.B7.A8.C9.D
二、填空及简答题(共6小题,化学方程式2分,其余每空1分,计24分)
10.(3分)(1)抽丝灼烧(或点燃),闻气味
(2)AL0
(3)延展
11.(4分)(1)C
(2)炉甘石洗剂放置后会出现沉淀,不符合溶液的“稳定性”特征
(3)C02不变
12.(4分)(1)N
(2)H20
(3)K、NO
(4)NHNO
13.(4分)(1)易溶
(2)降温结晶
(3)46.1
(4)B
14.(4分)(1)c或d或cd
(2)Na,C0+2HCl一2NaC1+H20+C02↑(无“↑”、未配平扣1分,化学式错误扣2分)
(3)无气泡产生或无明显现象
15.(5分)(1)①Fe+2HCl一FeCl2+H2↑(无“↑”、未配平扣1分,化学式错误扣2分)
②向右倾斜
(2)①稀盐酸或稀硫酸
②固体表面的黑色物质也可能是酒精燃烧不充分生成的炭黑
三、实验及探究题(共2小题,化学方程式2分,其余每空1分,计13分)
16.(6分)(1)锥形瓶
nO2
(2)2H202=
2H,0+02↑(无“↑”、未配平、条件错误扣1分,化学式错误扣2分)
(3)Fe0
(4)不会
(5)都变浑浊或都有固体析出
17.(7分)【分析问题】放出
【实验探究】(1)C(OH),微溶于水,可能会有过量的Ca(OH),未溶解,沉淀在烧杯底部
(2)无色酚酞或酚酞
(3)碱
(4)C0
【表达交流】Ca(OH)2+Na,C03一CaCO3↓+2NaOH(无“↓”、未配平扣1分,化学式错误扣2分)
四、计算与分析题(5分)》
18.(5分)(1)20…(1分)
(2)解:设参加反应的氯化铁的质量为x。
FeCl3+3Na0H—Fe(0H)3↓+3NaCl…(1分》
162.5
107
2.14g…(1分)
162.5=,107或162.5=,x
x2.14g1072.14g
解得x=3.25g
(1分)
氯化铁溶液中溶质的质量分数=3,25二x100%=6.5%
44444
(1分)
50g
答:略。
2023年陕西省初中化学全真模拟卷(三)A-答案-1(共1页)》I
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