4D homework 30/3/10

Answer the following question in your homework jotter by copying the passage and inserting the missing words.

4ths Bonding Prep



Ionic bonds are normally found in compounds that contain a and a
.

When this type of bond is formed, electrons are from the metal atoms to the atoms, during the chemical reaction.

The elements that form such bonds, do so because they want to have an electron arrangement with a outer , like the noble gases.

Ionic substances consist of oppositely charged which are held together by strong electrostatic forces, in a structure known as an ionic . Ionic structures are normally at room temperature as the have very melting and boiling points.

They do / do not (delete as appropriate) conduct in the solid state because their
are not free to move. In water or in the molten state they do / do not (delete as appropriate) conduct. This is because

They generally do / do not (delete as appropriate) dissolve in water.

Write the formula for iron (II) oxide, and Magnesium Nitrate.

Covalent bonds occur between a atom and a . Covalent bonding involves the of electrons. Covalent structures can either be or a . They do / do not (delete as appropriate) conduct when molten or solid. They generally do / do not (delete as appropriate) dissolve in water.

Covalent molecular structures have melting points, and covalent structures have melting points.

2H homework 30/3/10

Answer question 6 page 19 in your homework jotter.

3.1a homework 25/3/10

Revise methods of making salts and learn the solubility rules for a test next Thursday.

4D homework 24/3/10

Answer the question below in your home work jotter.


a) Draw a diagram that shows the arrangement of the particles in the sodium chloride lattice. Pay particular attention to the relative sizes of the particles and label the diagram indicating clearly the names of the particles present.

b) Does a compound with this type of lattice usually have

i. High or low melting temperature?

ii. High or low solubility in water?

iii. High or low electrical conductivity when molten?

c) Briefly explain each of the answers you have given in part b)

Copy and complete underloming added words.

i. The melting temperature of sodium chloride is ________ because_____

________________________________________________________________

________________________________________________________________

________________________________________________________________

ii. The solubility of sodium chloride in water is _______ because ________

_________________________________________________________________

_________________________________________________________________

_________________________________________________________________

ii. The electrical conductivity of molten sodium chloride is ________ because

_________________________________________________________________

_________________________________________________________________

_________________________________________________________________
d) Explain clearly why solid sodium chloride is a poor conductor of electricity.

e) State two ways in which a metal differs from sodium chloride in the way it
conducts electricity.

1.1a homework 25/3/10

Read pages 49 to 53 (chapter 2.3) very carefully. You will need this information to answer the questions. Answer questions 3 and 4 on page 53 in your homework jotteer

3.2b Homework 22/3/10

Work through the sheets handed out in class. Stick into lab books and hand in.

2H homework 22/3/10

Questions 3, 5 and 6 page 155 to be answered in blue homework jotter and handed in.

3.1a homework 22/3/10

Collect sheets for homework from the box outside TB's room. Work through these completeing all problems. Stick into your laboratory book and hand in for marking.

5.D2 homework 19/3/2010

Read through and make note on pages 120 -121 and answer all questions in blur homework jotters.

1.1a homework 18/3/2010

Read pages 45-48 and answer questions 4 and 5 in your blue prep jotters. Rgise with the 2nd edition of the textbook pages are 43 to 46.

5.D2 homework 17/3/10

Write a brief account of your experiment on cooling wax and draw and graph od the temperature of the wax against time.

5H1 homework 17/3/10

Read pages 112-3 and do questions 2, 3, 4.

4G INCLUDING ALL RUGBY PLAYERS

Complete work from end of today's lesson - ie read page 158, 159. Make brief notes on fullerenes and nanotubes. Answer all of the questions.

4.Sc homework 16/3/10

Work through pages 156 to 161 doing all problems and making notes. To be completed in class on Wednesday 17/3/10

4D homework 16/3/10

Work through pages 156 to 157 and 164 to 165 doing all questions.

3.2b homework 5/3/10

Do question 10 page 95 in your blue homework jotters.

6Hb

Titration calculations for Wednesday, using the big textbook. Page 184 Qu 5b, Page 186 Qu 6a, 6c

7.2

Review questions 1-4 on equilibrium chapter p170. For Friday.

2M

Research examples of where exothermic and endothermic reactions are used. Write a paragraph in your lab book. Give the work a title and date.

5.H1 homework 15/3/10

Complete the cooling curve grapg for wax. Write a brief account of the method and explain the significance of the "flat" part of the graph. Revise the properties of ionic and covalent substances and make sure you understand the terms validity and reliability.

5.D2 homework 12/3/10

Read through pages 98-101 and do all questions on pages 98-99.

3.1a homework 11/3/10

Revise all methods of salt preparation for a test next week. Make sure you can write word equatiuons for each method of salt preparation and know the names of the salts formed from common acids like hydrochloric, nitric, sulphuric and phosphoric acids.

4D homework 11/3/10

Draw molecuar structures (dispayed formulae) showing bonds and dot and cross diagrams (outer shells only) of the compounds with the following formulae.

NH3 H3COH NCl3 H2S OF2

1.1a homework 11/3/10

Research your chosen element so that you can complete your poster next lesson. A useful website is www.periodicvideos.com but you could also try googling your chosen element.

5.D2 homework 10/3/10

Read pages 92 -95 do all problems in blue jotters.

5.H1 homework 10/3/10

Work through pages 92 to 95 of C3 doing all problems.

6hB

Finish 11.2 checktest. Complete questions 1,2,4 on pages 180-183 of big textbook. For Friday.

4G2

Questions on halogen and nobel gas electron arrangements from C2 textbook.

2M

Research the energy value (in kcal or kJ/mol) for foods in your kitchen. Make up a table for the data in your prep books. Give the table headings and the piece of work an underlined title and date.

4D homework 9/3/10

Read pages 154 to 155 in Additional Science (C2) then do questions 1 to 5 on those pages in your blue homework jotter.

3.2a Homework 09/03/10

Textbook Pg 89, Q1 and 2

3.2b homework 8/3/10

Read the chapter on reactions of acids again then do questions 2,3 and 8 on page 89. Answers in blue homework jotters.

5H2 Mon 08/03/10

Pgs 104-105 Q's 2,3,4,5

2H homework 9/3/10

You should work at the planning and writing of your essay on "Rusting - its Cause and prevention" . Your essay should be no longer that 500 words long. It should have a brief introduction. The middle section should explain what rusting is and how it can be prevented. For each method of prevention you should explain how the method works and give an example of where the method is used. You should give a brief summary at the end (no more than one paragraph). Make sire you include suitable, relevant diagrams. These are not included in the word count. Remember to state the number of words used at the end.

5.D2 homework 5/3/10

Continue the work started in class today working through pages 82 to 95 of C3. Make notes in your lab book of any of this material that you are not totally on top of. Answers all questions in your lab or homework book.

3.1a homework 4/3/10

Read 83 - 88 and do questions 1, 2, 3 and 8 on page 89 in small, blue homework jotters.

6hB

Revise for a past paper test on topic 10 - acids and bases and equilibria. Note this has been moved forward to tomorrow (Friday)!!!

1.1a homework 4/3/10

Read pages 45 to 48 on Elements and the Periodic Table. Do questions 1, 2 and 3 on page 48 (NB New edition starts at page 43)

1.1b

Question 7 page 65 in textbook. Write one or two sentences for each part. Hand in next Tuesday.

1.2b

Revise for a test on separating mixtures on Friday. Highlight key words in your jotter. Write down a list of important facts and LEARN. Ask someone to test you....

6hB

Revise for a test on topic 10 - acids and bases; equilibria - on Monday.

6hB

7.2

End of chapter questions for "how far" chapter on equilibia. For next Monday.

7.2

4G2

Final revision of chapters 5,6,7,8 for module exams this week. Use textbook and notes. Write condensed revision notes and learn.

2M 1/3/10

Read pages 124,125 and answer questions 1,2,3.

2H homework 1/3/10

Read pages 150 to 154 and do questions 1 and 2 on page 155 in your blue homework jotters.

6H (KDM) 01/03/10

Pg 91 Q8, 10 from revision books, both methods of calculation.

Test on topic 10 Tuesday morning, 1 to do NAB.