问题 问答题

下图每一方框中的字母代表一种反应物或生成物:

产物J是含A金属元素的胶状白色沉淀,I为NaCl溶液,D是淡黄色固体单质.试填写下列空白:

(1)L的化学式为:______.

(2)F的化学式为:______.

(3)写出J受热分解反应的化学方程式:______.

(4)H和G之间反应的化学方程式为:______.

答案

(1)中学阶段学习过的淡黄色固体单质为S,则G是二氧化硫,与SO2反应生成S的物质为H2S,二者反应生成S和水,故答案为:H2O;   

(2)从“J是含A金属元素的胶状白色沉淀”可初步认定A是铝,J是氢氧化铝;从“I为NaCl溶液”可推出C为钠,F为硫化钠,B为Cl2,E为AlCl3,L为H2O,H为H2S,故答案为:Na2S;    

(3)氢氧化铝在高温下分解生成Al2O3和H2O.根据质量守恒定律可写出化学方程式:2Al(OH)3

  △  
.
 
Al2O3+3H2O,

故答案为:2Al(OH)3

  △  
.
 
Al2O3+3H2O;      

(4)SO2具有氧化性,H2S具还原性,二者发生氧化还原反应生成S和H2O,故答案为:2H2S+SO2═3S+2H2O.

阅读理解

阅读理解。

     Exhibition: Little Angels

     Date: January 10 - September 13, 2010

     Time: 10:00 am - 5:00 pm

     This exhibition shows more than 25 paintings by the Mount brothers, exploring the

ways in which the artists use images of children in their work and why these images are

still popular today.

     Museum admission: $9 Adults /$7.00 Seniors /

     $4.00 Students'/Free for children under age six

     Where: The Long Island Museum 1200 Route 25A, Stony Brook, NY 631-751-0066

     Summer Docs Series

     Date: June 25, 2010

     Time: 8:00 pm

     For the first time since its founding in 1993, The Hamptons International Film Festival,

working with Guild Hall, will expand its programme to host a summer documentary

(纪录片) show with three films that focus on various cultural and social themes.

     Award-winning actor Alec Baldwin will serve as host for all three films, beginning

with The Cove, an environmental documentary about the dolphin capture (捕猎海豚)

trade on Friday, June 25th at 8:00 pm.

    The other films will be screened on July 31st and August 25th.

     Where: Guild Hall 158 Main Street, East Hampton, NY 631-324-0806

     Admission: $20 / $18 Guild Hall members

     Not Your Typical Solar Energy Class

     Date: June 18, 2010

     Time: 7:30 pm--9:30pm

     Sunshine is free and so is this "Not your typical solar energy class". Learn how

solar electric and solar hot water can cut your bills. Free admission, plus free food

and drink, and free "green" gifts.

     Where: The Velux Building 2905 Veteran' s Memorial Hwy, Ronkonkoma,

NY 516- 809- 7182

     Stony Brook vs. Brown

     Date: September 19, 20 I0

     Time :6:00 pm

     * High School Night

     * Tickets are free for all Stony Brook students with a Stony Brook ID. Wear

red and support your Stony Brookers! Tickets can be bought at our website.

     * Game time may change.

     Where: LaValle Stadium at Stony Brook University Nichols Rd, Stony Brook,

NY 631-632 -9556

1. The title of the exhibition Little Angels probably refers to _____.

A. visitors

B. talented artists

C. the Mount brothers

D. children

2. The "Not your typical solar energy class" will _____.

A. give visitors free presents

B be held in NY 631 -324 -0806

C. provide food and drink at a low price

D. tell you how to cut bills when shopping

3. The last part is probably an advertisement for _____.

A. a web game

B. a sports game

C. a music concert

D. a sports meeting

单项选择题