Conclusion: Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete
sentences using your own words.
1. Using two to three sentences, summarize what you investigated and observed in this lab.
2. Why do you believe knowing how elements and compounds react together is essential in everyday matters?
3. Some elements are more "reactive" than other elements; why do you think this is?
4. Choose one of the compounds from the table and explain how you know the numbers of atoms in your formula.
5. Is it possible for two different compounds to be made from the exact same two elements? Why or why not? With a limited
number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a
large number of compounds in this world?

Is a measure of the resistance to flow. a high liquid has a high resistance to flow and flows slowly. the ancients thought everything in the world was made of 4 we now know that there are 94 naturally occurring and scientists have created another 24 i am certain they will create even more. honey flows slowly because it has a high to flowing. a can be separated by physical means because it contains more than one pure substance and 2 pure substances are not chemically bonded to each other. a cannot be separated by physical means. all matter is made up of all elements are with the same number of protons. if it is just a single or many bonded together, if all of them have the same number of protons, it is an element. in a piece of pure iron metal, all the are joined together, that piece of iron metal is called elemental iron. a single of iron is called elemental iron. a mixture has differences from place to place. we might need a microscope to see them or they might be obvious to the unaided eye. there are surfaces separating it into different phases. a mixture is the same everywhere. it is uniform. there are no surfaces separating it into different phases. if different kinds of atoms (different elements) are bonded together by their electrons, it is called a there are physical means of to isolate the different pure substances in a mixture and there are chemical means of to isolate the different elements in a compound. 1. element 2. compound 3. mixture 4. heterogeneous 5. homogeneous 6. pure substance 7. atoms 8. separation 9. viscosity 10. resistance

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.