Avery Gress's 8th Grade Science Portfolio

KNO3
KClO3
Same
Neither is soluble

20. Analyze the following Solubility Graph: What is the
solubility of NH4Cl at 80 C? ​*

Link:
https://docs.google.com/document/d/1s65CpsJlWTXPZcpy6q7Yxop_ZtUWB8lnwc0mY6tRe9s
/edit

Your answer

21. ___________ is the measure of the amount of solute
(grams) that can be dissolved in 100 mL of Solvent at a given
temperature. *​

density
temperature
solubility
Gravity

22. Analyze the graph: Suppose you have 70 g of KNO3 at 20
C. At what temperature would it reach its saturation point and
completely dissolve the solute. ​*

Link:
https://docs.google.com/document/d/1sDe6bSH-2B5XQN-M6f7iR3bHzZk-nE_gBiNqb5TKW1w
/edit

Your answer

23. Analyze the following Phase Change graph for Gold: How
much Heat Energy is required to melt the sample of Gold? *​

Link:
https://docs.google.com/document/d/1kQJTpEg6yITLjstoDiYnCkps0F3JTks-0VOR8xGDxZQ/
edit

Your answer

24. Why would the following graph be different for Gold? *​

Link:
https://docs.google.com/document/d/1hSEJSEWCPDLUkzco-G7dmQPAaOWGZfLIr1X9lzyCb
Uw/edit

Gold is shinier and more expensive
Gold is more expensive
Gold substance has a much higher melting and boiling point than water.
Gold substance has a much lower melting and boiling point than water.

25. The energy required to change 1 gram of ice into liquid
water is called ___________. ​*

Heat of Fusion
Heat of Vaporization
Specific Heat
Boiling Point

26. Which Phase of Matter would contain the most Average
Kinetic Energy? *​

Solid
Liquid
Gas
Solubility

27. How much Heat Energy would be required to increase the
temperature of 37 grams of water from 21 C to 89? *​

Your answer

28. Which Phase of Matter would occupy the LEAST volume?

Solid
Liquid
Gas
Density

29. Matter can never be created or destroyed is called the
______________. ​*

Law of Conservation of Density
Law of Solubility
Law of Conservation of Temperature
Law of Conservation of Mass

30. Which of the following equations follows the Law of
Conservation of Mass? *​

Link:
https://docs.google.com/document/d/1Bit6CoaA9_9ltYZY1oxBXx3dGZFnLYa1D92fD3SFlt0/ed
it

A
B
C
D

31. What are the correct Coefficients for the following
chemical reaction? *​

Link:
https://docs.google.com/document/d/1Q6nwXorw6uPomnNkGUDvdkSsMJHIqe7vj_3fY8GjU0
8/edit

1, 2, 1, 2
2, 1, 2, 1
1, 2, 2, 1

1, 1, 1, 1

32. What are the correct Coefficients for the following
chemical reaction? *​

Link:
https://docs.google.com/document/d/1OGMTahw8zIZlmW6g6EKGQN_jjiXYUWEr5ntiaMzUH4
4/edit

1, 2, 2
3, 4, 2
4, 2, 3
4, 3, 2

33. What is the Formula weight for the following Chemical
Compound? AgNO3 ​*

Your answer

34. Which two elements have the same number of valence
electrons? ​*

C and O
Na and Mg
Cl and F
Ga and Ge

35. What is the % of Oxygen in Lithium sulfate? ​*

Link:
https://docs.google.com/a/cheshire.k12.ct.us/file/d/0B4RmhXJlHvo1eFRKaXZVbEZKemc/edit

Your answer

36. What is the % of Oxygen in Magnesium nitrate? ​*

Link:
https://docs.google.com/a/cheshire.k12.ct.us/file/d/0B4RmhXJlHvo1eFRKaXZVbEZKemc/edit

Your answer

37. How many neutrons does an atom of Uranium have? ​*

Your answer

38. What do all Alkaline Earth Metals have in common? ​*

1 valence electron
2 valence electrons
3 valence electrons
0 valence electrons

39. Why are Noble Gases unique? *​

All have 3 Valence electrons
Filled outer shell of electrons
All have 7 Valence Electrons
All are metals

40. What is the Atomic number of Phosphorus? ​*

Your answer

41. Identify the type of Chemical Reaction: *​

Link:
https://docs.google.com/document/d/1-CkKx_pNE2INQUzMN1B4OuihhDiMYBo7JnHQnXGNJ
Qk/edit

Synthesis
Decomposition
Single Replacement
Double Replacement

42. Identify the type of chemical reaction: ​*

Link:
https://docs.google.com/document/d/1rAgqRAWN1eCfuFj0ISnpG58YOlu8sdqkCrJCXMOrCS
c/edit

Synthesis
Decomposition
Single Replacement
Double Replacement

43. How many neutrons does an atom of Silver have? ​*

Your answer

44. _____________ is (are) a Family of elements that has 7
Valence electrons and likes to bond with elements in the
Alkali Metal Family. ​*

Alkaline Earth Metals
Noble Gases
Halogens
Oxygen Family

45. A person walking covers 125 m in 8 seconds. How fast is
the person moving? *​

Your answer

46. Acceleration: Review the attached data table and calculate
the Acceleration. *​

Data Table:
https://docs.google.com/a/cheshire.k12.ct.us/spreadsheets/d/1uSKW-KTCJlatL7ZXH2XJr4gc
vIt-8WzYA6uk6GXt7i4/edit#gid=0

Your answer

47. Why does a flat piece of notebook paper take longer to
reach the ground than an identical piece of notebook paper
crumpled into a ball? *​

The flat piece of paper has more mass.
The crumpled piece of paper has more mass.
The frictional force of air has more effect on the falling flat piece of paper.
The frictional force of air has more effect on the falling crumpled piece of

48. Inclined Plane - Review the diagram and calculate the
AMA of the Inclined Plane. *​

Diagram:
https://docs.google.com/a/cheshire.k12.ct.us/drawings/d/1ZSdGCOGRlE1l4DDrAv0XR51wTS
TYytEnweyoOrOmTME/edit

Your answer

49. What is the Independent Variable in the following data
table about Gravitational Potential Energy? *​

Data Table:
https://docs.google.com/a/cheshire.k12.ct.us/spreadsheets/d/1-NO0LM9iIrcWTid4XYV-gFBps
BG7ii2ht_pjNLfGark/edit#gid=0

angle
height
mass
Gravity

50. What would the GPE be in Trial #1 if the Gravity were 41%
greater than Earth's? ​*

Data Table:
https://docs.google.com/a/cheshire.k12.ct.us/spreadsheets/d/1-NO0LM9iIrcWTid4XYV-gFBps
BG7ii2ht_pjNLfGark/edit#gid=0

Your answer

51. An Inventor tells that you all of his machines are possible.
Is he telling the truth? If not, which machine would be
impossible? *​

Data Table:
https://docs.google.com/a/cheshire.k12.ct.us/spreadsheets/d/1vhRjMEpnotZj2VQ4yqmN9xZv
t69svwCvxc56Lhs6oaE/edit#gid=0

Machine A
Machine B
Machine C
Machine D

52. Analyze the graph: What would the KE be of the object in
Trial 3 if it has a mass of 18 kg? ​*

Graph:
https://docs.google.com/a/cheshire.k12.ct.us/spreadsheets/d/10DC79qgorKoTlHoFKarZXrFe
NMLo0VZ0fOPOUDGjQUg/edit#gid=0

Your answer

53. What is the Dependent Variable in the following
hypothesis: If the Angle is increased, then the Acceleration of
the marble will increase. *​

Kinetic Energy
Angle
Acceleration
Density

54. How is Energy being transferred in the following picture?

Picture:
https://docs.google.com/document/d/1JQgrI1Ih3o7AZsPFqu1SXxNg-ST0suVulDykIs7CBww/e
dit

Conduction
Convection
Radiation
Heat of Fusion

55. States that energy in a system can change forms but can
never be created or destroyed. ​*

Law of Energy Enhancement
Law of Energy Creation
Law of Conservation of Energy
Law of Construction of Energy

56. What type of heat transfer occurs when the plates move
on the Earth (Plate Tectonics)? *​

Link:
https://docs.google.com/document/d/1JUtgGEsEy4A1UaAdXtYXBabjiSQc4NYZ0HR_RHq-yQ
w/edit

Conduction
Convection
Radiation
Density

57. Why is the breeze blowing from Sea towards Land during
the day? *​

Picture:
https://docs.google.com/document/d/1Ro_CcYZy1WoJhPidXDvAZiIgpw-opVx_J5jfiX6WUrE/e
dit

The water has a higher specific heat than the land
The land has a higher specific heat than the water.
The water has the same specific heat as the land.

It is the summer.

58. Compare the Heat Energy between Beaker A and B. ​*

Link:
https://docs.google.com/document/d/1ZikaQoYj5ZlOPpr-Y7pi2Bq43KfRWtCmLH11RbwEaOw
/edit

Beaker A is greater than Beaker B
Beaker B is greater than Beaker A
Beaker A is equal to Beaker B
Beaker A is the square root of Beaker B

59. If it takes 125 joules to heat a piece of gold weighing 35 g
from 18.0 °C to 43.0 °C, what is the specific heat of the gold? *​

Your answer

60. A sample of Aluminum has a mass of 78 g. The metal
increased in temperature from 23 C to 65 C. How much Heat
did the sample of Aluminum gain in this example? Round to
the nearest calorie. ​*

LINK:
https://docs.google.com/document/d/1B7MmzgBmmq9Gb5mh3uIJP0IRTaJthq02udZTKbMEd
Ic/edit

Your answer

61. An inclined plane had an Input Distance of 470 cm and
and Output Distance of 175 cm. What is the Angle of the
Ramp? ​*

Link:
https://drive.google.com/file/d/0B4RmhXJlHvo1YXZhcDNMSDNSMXc/view?usp=sharing

Your answer