answer the following questions:

1. When you are exposed to more than one compound, one of the following can be observed: (1) Additive, (2) Synergistic, and (3) potentiation. Define each term and give an example using values or a bar chart. 
2. Define and distinguish sensitivity, tolerance, and resistance with respect to exposure to a compound.
3. Define LD50
4. Why is it that the lower an LD50, the more toxic it is?

1. Describe how would you determine if exposure to a compound is toxic?

2. Describe and distinguish chronic and acute exposure to a compound?

3. Define and distinguish local and systemic effect of a compound?

Answer the following question:

1. 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 horse chestnut tree, a tree which only grows throughout 20% of the world and reaches maturity in 75-80 years. It was found that only the flowers 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)

Label each of the following images as an atomic element, a molecular element or a compound