As a scientist working in a government lab, you have been given full control over the production of a new compound. The compound was isolated from the Eastern cypress tree, a tree which grows throughout 75% of the world and reaches maturity in 2-3 years. It was found that only the needles contain the compound of interest (shown to the right).

Choose whether you would extract from the natural source or chemically synthesize the compound. Explain and justify three reasons that support the choice you made and one reason, that is different than anything you mentioned, why your choice might not be the best – detail required in all answers. (9 marks)

Part B: True or False? 

* Determine if each statement is true (T) or false (F).

12. _______ An element cannot be broken down into simpler chemical substances by any physical or chemical means.

13. _______ If an element is a gas at room temperature, it is likely to be a metal.

14. _______ Elements in the same period of the Periodic Table have varying (different) properties.

15. _______ Hydrogen is a clear, colourless gas that is highly reactive. Based on these properties, Hydrogen is

similar to the Halogens.

16. _______ The element Iodine is a shiny black solid at room temperature. Iodine is thus an example of a metal.

17. _______ Electrical advertising signs made of colourful glowing light tubes are often filled with elements from the  

halogen family.

18. _______ John Dalton proposed the idea of indivisible atoms.

19. _______ Experiments by J.J. Thomson showed that atoms contain neutrons.

20. _______ An atom with 16 protons, 16 electrons and 18 neutrons has a mass number of 50.

21. _______ Elements in group 15 of the periodic table all have 15 valence electrons.

22. _______ Chlorine has electrons in 3 energy levels.

23. _______ When copper is added to tin, the alloy bronze is created. Bronze is an example of a compound.

Part B: True or False? (K – 12 marks)

* Determine if each statement is true (T) or false (F).

12. _______ An element cannot be broken down into simpler chemical substances by any physical or chemical means.

13. _______ If an element is a gas at room temperature, it is likely to be a metal.

14. _______ Elements in the same period of the Periodic Table have varying (different) properties.

15. _______ Hydrogen is a clear, colourless gas that is highly reactive. Based on these properties, Hydrogen is

similar to the Halogens.

16. _______ The element Iodine is a shiny black solid at room temperature. Iodine is thus an example of a metal.

17. _______ Electrical advertising signs made of colourful glowing light tubes are often filled with elements from the  

halogen family.

18. _______ John Dalton proposed the idea of indivisible atoms.

19. _______ Experiments by J.J. Thomson showed that atoms contain neutrons.

20. _______ An atom with 16 protons, 16 electrons and 18 neutrons has a mass number of 50.

21. _______ Elements in group 15 of the periodic table all have 15 valence electrons.

22. _______ Chlorine has electrons in 3 energy levels.

23. _______ When copper is added to tin, the alloy bronze is created. Bronze is an example of a compound.

Atomic #

Mass #

Standard Atomic

Notation

Family Name

p+

n0

e-