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Dorling Kindersley Science Encyclopedia Work/Review Sheets

POOR METALS

Read each question and circle the letter of the best answer.
NOTE: Some questions may have more than one "correct" answer - think carefully about what you have read, and choose the most complete one.

1.Which of the following describe the poor metals?
A) Very soft and weak. B) Easy to melt. C) Very usefull. D) A, B & C.

2.How many poor metals are found in the Periodic Table?
A) 6. B) 8. C) 10. D) 109.

3.Because they were easily extracted from their ores, which two poor metals were first used by humans?
A) Tin and lead. B) Bronze and copper. C) Tin and copper. D) Pewter and solder.

4.Tin and copper were combined to make what?
A) Bronze, the first alloy. B) Jewelry. C) Tools. D) A, B & C.

5.Lead is called a 'heavy' metal. Why?
A) It weighs a lot. B) It is used in Rock Music. C) It is very dense. D) A & C.

6.Our word for drainage systems comes from the Roman word for lead, 'plumbum'. What is it?
A) Plumage. B) Drainage. C) Plumbing. D) Romano.

7.What uses are made of aluminum & lightweight alluminum alloys?
A) Airplanes. B) Electrical wires. C) Tin foil. D) A, B & C.

8.Why is lead a good barrier to radiation?
A) It is the right shade of green. B) It is easily cut into aprons. C) Its density. D) A, B & C.

9.Pewter and solder are both what?
A) Poor metals. B) Tin-lead alloys. C) Pure metals. D) A, B & C.

10.The poor metals have one of the most dense and one of the least dense metals. What are they?
A) Tin and gallium B) Lead and bismuth. C) Lead and aluminum. D) Indium and tin.

11.How does adding lead oxide affect crystal?
A) It makes it softer. B) It makes it sparkle. C) Designs to catch the light can be cut into it. D) A, B & C.

12.Tin has two forms. What are they?
A) White. B) Grey. C) Black. D) A, & B.

What more can you say about MATTER now?________________________________________________________________________________
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Matter17 Š1999-2000 Sassafrass Grove Homeschool

NOTE: These work/review/related-activity sheets are for use with the DK Science Encyclopedia as a 12 part science study. The first portion of the initial section, "Matter" is presented here. More will be added as time permits. If you find errors or see need for additions, please contact us at the e-mail address provided at the bottom of this page.

This site and these worksheets are in no way associated with nor endorsed by Dorling Kindersley.

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