Exam review

Exam review. SNC1D1

Name the terms and answer the questions

1. This type of bacteria take Nitrogen from the atmosphere and turns it into nitrates that can be used by producers_______________________________

2. This measure current___________________

3. This refers to all the interactions between living things and their environment_________________

4. This is the birthplace of stars________________

5. This type of material tend to be relatively malleable and a good conductor_____________

6. This type of element loves to combine with Halogens to form ionic compounds_________________

7. A large collection of billions of stars_________________

8. A cluster of millions of stars. These are found in the hub of our

Milky Way________________

9. A kWh is a unit of _____________________________

10. When a charge object is used to charge something with out touching it is it called __________________________________________

11. This list of material is used to determine whether an insulator will become positively or negatively charged when it is rubbed against another material __________________________

12. This process uses electricity to turn the compound H₂O into H and O _________________________

13. A homogenous mixture _____________ (looks like a pure substance but is not)

14. the rigid outer part of the earth, consisting of the crust and upper mantle._____________

15. The parts of the land, sea, and atmosphere in which organisms are able to live______________

16. Which biome tends to have the greatest biodiversity______________________ 17.Why?________________________________________________________________

18. This type of bacteria takes nitrates from decomposing material and turns it back into Nitrogen ____________________. Where does the nitrogen go?___________________________________

19. the way in which an organism fits into an ecological community or ecosystem_______________

20. This device is connected in parallel when it takes its measurements___________________. What does it measure?______________________

21. A population will either self correct or collapse if it exceeds its _________________

22. Under what conditions would a population experience exponential growth? _____________________________________________________________________

______________________________________________________________________

23. This group becomes ions with a charge of 2+ when they form ionic compounds___________________

24. This group becomes ions with a charge of 1- when they form ionic compounds ____________________

Explain why ________________________________________________________________________

25. When you move down the left side of the periodic table reactivity _______________. Why? ________________________________________________________________________________________________________________________________________________

26. When you move down the right side of the periodic table reactivity _____________. Why? ______________________________________________________________

27. Alloys are _____________________ of metals. Are they pure substances? ________________

28. Which has more biomass, a keystone species or a dominant species?______________ Explain why____________________________________________________________

29. Adding nutrients like nitrogen and phosphorous to a lake will speed up E__________________________. List some ways that N and P end up in lakes.

30. A device that can tell you what elements are present in the gases emitted by a substance is called _______________________________

31. List the two MAIN pieces of evidence that support the Big Bang theory__________________________________________________________________________________________________________________________________________________________________________________________________________________

32. The electron found on the outer shell of an element are called its _________________ electrons. As you go down a group in the periodic table the number of valence electrons ______________________

33 A very dense star is called a/an ________________________________

34. The biggest stars in the universe end up as ______________________________

35. List the planets in order from the SUN ________________________________________________________________________

________________________________________________________________________

where is the asteroid belt located _____________________________________________

36. Frozen masses that orbit with have such long elliptical orbits__________________

37. Autotrophs are also called _____________________________________________

38.What do decomposers consume?_________________________________________

39. List some of the ecological services provided by:

a) Trees___________________________________________________________________________________________________________________________________________

________________________________________________________________________________________________________________________________________________

b) insects__________________________________________________________________________________________________________________________________________

________________________________________________________________________________________________________________________________________________

c) soil_______________________________________________________________________________

_____________________________________________________________________________________

40. This is a non-mutual symbiotic relationship between species, where one species, benefits at the expense of the other, the host.__________________________

41. This refers to the way two organisms of different species exist in a relationship in which each individual benefits from the activity of the other.________________________________________

42. The largest gas giant_______________________

43. The living parts of an ecosystem ______________ i.e._________________

44. Pure substances can be either elements or ____________________________

45. Compare ionic and covalent bonds____________________________________________________

________________________________________________________________________________________________________________________________________________

________________________________________________________________________________________________________________________________________________

46. I (ionic) or C (covalent) or both?

Which type dissolves easily? _______________ which forms between non metals__________________

Which is found in polyatomic ions_______________ Which is found between a polyatomic ion and a non metal _________________ which shares electrons_______________ Which transfers electrons _________________

Which Results in full outer shells _________________________________________________________

47. Briefly explain why different elements give off different colours when heated _________________

________________________________________________________________________________

48. Our homes are wired in ___________________________________ Why ____________________

________________________________________________________________________________

49. How does a fuse or circuit breaker protect your home?____________________________________

_________________________________________________________________________________

50. If a bulb that uses 200W gives off 120W of light, what is its efficiency?

51. If a bulb that uses 130W loses 80W to heat. Determine its efficiency.

52. A motor that is 75% efficient does 300J of work. How much energy did it use?

53. Name the compound CuO Cu O₂ N₂O₄

BaCl₂ SF₆ FeS Fe₂S₃

ANSWERS Exam review SNC1D1

1. Nitrogen Fixing 2. Ammeter 3. Ecosystem 4. (Solar) Nebula 5. Metals or a type of metal 6. Metals (alkali metals, and alkaline Earth metals) 7. Galaxy 8. Globular clusters9. Energy ( E=Pxt) 10. Charging by induction (charge comes from The Earth) 11 Electrostatic series 12. Electrolysis 13. Solution 14 Lithosphere 15. Biosphere 16Rain forest 17. warm and moist 18. Denitrifying bacteria atmosphere 19. Niche 20.Voltmeter measure voltage (voltage drop or increase) electric potential difference 21Carrying capacity 22. extra resources (food, habitat water, limited predators and competition 23. Alkaline Earth metals 24. Halogens need one more electron to form a stable octect (full outer shell) 25. Increases it is easier to lose a negative electron. Further from positive nucleus weaker attractive force 26. Decreases harder to attract negative electron to nucleus which is further 27. Solutions No 28 Dominant. Keystone are important but not necessarily numerous. Often higher in food chain therefore fewer. Dominant means more biomass bottom of food chain 29. Eutrophication Fertilizers, fecal matter (manure) from animals (farms) shampoo, sewage, insecticide and pesticides 30. Spectroscope

31. Cosmic background (microwave) radiation leftover from the Big Bang. Also, further stars are moving away faster determined from the red shifting of their spectral patterns, like surface of a balloon therefore universe is expanding and was once small, like really really small. (13,7 billion years ago)

32. Valence . Stays the same 33. Neutron star 34. Black Holes

35.Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune, Between Jupiter and Mars 36. Comets. 37. (plants, algae) producers first 38. dead plants and animals 39 discuss in class 40. parasitism 41. mutualism (symbiotic) 42. Jupiter. 43. biotic plants animal bacteria 44. compounds 45. in class 46 I C C I C I both

47. in class 48. parallel. All loads are desinged for 120V. If in series they wouldn't get the right voltage to operate at the stated power level. 49. to prevent overheating of wires cause by high currents. helps prevent fires. 50. 60% 51 38% 52 400W

53 Copper(II)oxide Copper(IV) oxide dinitrogen trioxide bariumchloride

sulfurtexafluoride iron(II)sulphide Iron(III)sulfide