题目内容
【题目】有下列物质:①二氧化碳 ②硝酸钾晶体 ③液氯 ④氢气 ⑤氯水 ⑥石墨 ⑦氢氧化钠固体 ⑧稀硫酸 ⑨熔融氯化钠 ⑩铝。
请用序号回答下列问题:
(1)属于混合物的是__________;属于非金属单质的是___________。
(2)属于电解质的是__________;能够导电的是____________。
(3)能与稀盐酸发生氧化还原反应的是__________;该反应的离子方程式为____________________。
【答案】(1)⑤⑧(1分) ③④⑥(1分) (2)②⑦⑨(1分) ⑤⑥⑧⑨⑩(1分)
(3)⑩(1分) 2Al+6H+===2Al3++3H2↑(2分)
【解析】①二氧化碳是化合物,不能电离产生自由移动的离子,是非电解质,不能导电;②硝酸钾晶体是盐,属于电解质,由于离子不能自由移动,因此不能导电;③液氯是非金属单质,由分子构成,不能电离产生自由移动的离子,因此不能导电;④氢气是非金属单质,由分子构成,不能电离产生自由移动的离子,因此不能导电;⑤氯水是氯气的水溶液,是混合物,含有HCl和次氯酸,它们电离产生自由移动的离子,因此可以导电;⑥石墨是非金属单质,含有自由移动的电子,可以导电;⑦氢氧化钠固体是碱,属于电解质,由于含有的离子不能自由移动,因此不能导电;⑧稀硫酸是硫酸的水溶液,属于混合物,硫酸电离产生大量自由移动的离子,因此可以导电;⑨熔融氯化钠是盐,属于电解质,该物质是离子化合物,在熔融状态下电离产生自由移动的离子,因此可以导电;⑩铝是金属单质,含有自由移动的电子,因此可以导电。(1)在上述10种物质中,属于混合物的是⑤⑧;属于非金属单质的是③④⑥。(2)属于电解质的是②⑦⑨;能够导电的是⑤⑥⑧⑨⑩。(3)能与稀盐酸发生氧化还原反应的是⑩铝,反应方程式是2Al+6HCl===2AlCl3+3H2↑,离子方程式是2Al+6H+===2Al3++3H2↑。
【题目】A
WISDOM MISSION SCHOOL ADMISSION PROCEDURE
FOR JR. HIGH/HIGH SCHOOL STUDENTS
Thank you for choosing Wisdom Mission School for your child’s future. We are committed to provide quality education with love.
Prospective US residents are welcome to apply for admission by submitting the following documents via e-mail, fax, and US mail to Wisdom Mission School:
Wisdom Mission School
Admission Office
5851 Newman St.
Cypress, CA 90630
Contact us if you have any question:
Phone: 1-714-995-1900 1-562-833-2070
Fax: 1-714-995-1910
E-mail: wms.edu@gmail.com
Required Documents for Jr. High/High School Students (Click to Download Forms)
Admission Application
Student Agreement (Rules and Regulations)
Transcript (Sent directly by previous school)
Essay on the reason for Admission to Wisdom Mission School
After you submit all the documents, admission is approved.
Enrollment Agreement along with Tuition/Fees Payment.
Elementary (K—6th) | Jr. High (7th—8th) | High (9th—12th) | |
Tuition | $450×11 Payments | $540×11(Honors) $900×10(Regular) | $9,000 or $900×10 Payments |
Enrollment Fee | $600($300/2nd child, $200/3rd child) | $700 | |
Other Fee | None | $500 | |
Re-registration Fee | Paid by April 1st: $100 Paid after April 1st: $150 | None | |
【1】What do students have to get from their previous school?
A. Transcript. B. Student agreement.
C. Essay. D. Admission application.
【2】 If your admission is approved you will ____________.
A. fax to 1-714-995-1910
B. finish the enrollment agreement along with Tuition/Fee Payment
C. click to download forms
D. complete the forms
【3】How much is the Enrollment Fee if one couple has three children, and two will go to Elementary and another will attend High in Wisdom Mission School?
A. $1,100. B. $1,300. C. $1,600. D. $1,800.