1. Challenge 1 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

2. a) bla lsslik b) icmret etssym c) cishsyp d) mcytsheri e) areht ieenccs f) tpnal ieenccs The underlined letter is the first letter of each word.

3. a) Lab Skills b) Metric System c) Physics d) Chemistry e) Earth Science f) Plant Science a) bla lsslik b) icmret etssym c) cishsyp d) mcytsheri e) areht ieenccs f) tpnal ieenccs The underlined letter is the first letter of each word.

4. Challenge 1

6. FlammableExplosiveCorrosive Poison Images from http://www.cpsc.gov/CPSCPUB/PUBS/NIOSH2007107.pdfhttp://www.cpsc.gov/CPSCPUB/PUBS/NIOSH2007107.pdf

7. Challenge 2 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

9. Images from http://chemistry.about.com/od/healthsafety/ig/Laboratory-Safety-Signs/http://chemistry.about.com/od/healthsafety/ig/Laboratory-Safety-Signs/ BiohazardRadioactivityOxidizingFire Extinguisher

10. Challenge 1 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

13. Challenge 2 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

16. Challenge 3 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

19. Challenge 4 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

22. Challenge 5 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

24. First, put on safety goggles and lab apron. Tie back long hair and check your shirt sleeves. Second, light alcohol burner with match. Third, remove test tube from rack and hold test tube with test tube clamp. Finally, when heating test tube, hold with clamp, place bottom of test tube over flame, and point the opening away from your face.