1. 8th Grade Science T-Cap Practice
Life
Science
Forces of Nature
Solids, Liquids, Gases, Oh My!
Odds ‘n Ends
Chemical Reactions
Q 100
Q 100
Q 100
Q 100
Q 100
Q 200
Q 200
Q 200
Q 200
Q 200
Q 300
Q 300
Q 300
Q 300
Q 300
Q 400
Q 400
Q 400
Q 400
Q 400
Q 500
Q 500
Q 500
Q 500
Q 500

2. 100 Question Chemical Reactions
The pH of a weak acid is
A 9.1
B 8.2
C 7.0
D 6.5

3. 100 Answer Chemical Reactions
D 6.5 ??

4. 200 Question Chemical Reactions
A student applies heat to a solid substance. Which indicates that a chemical change occurred?
The substance becomes a liquid but solidifies when cooled.
The substance changes color and stays that color when cooled.
C. The substance goes from liquid to gas very quickly.
D. The substance expands but stay s the same color.

5. 200 Answer Chemical Reactions
B. The substance changes color and stays that color when cooled. ??

6. 300 Question Chemical Reactions
Which of these represent chemical change?
A. A match lit, creating a yellow-orange flame
B. A small piece of ice melts, changing from a solid to a liquid
C. A ball of clay sinks in the water, and floats when reshaped.
D. A pot of water is heated to boiling, and evaporation occurs.

7. 300 Answer Chemical Reactions
A. A match lit, creating a yellow-orange flame ??

8. 400 Question Chemical Reactions
A chemical equation is shown below:
The element zinc (Zn) can best be described as a
Compound
Mixture
Gas
reactant

9. 400 Answer Chemical Reactions
Reactant
(Starting material in a chemical reaction) ??

10. 500 Question Chemical Reactions
Which sample equation best illustrates the law of conservation of mass?
12 grams reactant X + 10 grams reactant Y ---- 2 grams product Z
5 grams reactant E + 5 grams reactant F --- 20 grams product G + 5 grams product H
4 grams reactant U + 3 grams reactant V --- 7 grams product W
10 grams reactant Q + 9 grams reactant R --- 90 grams product S + 90 grams product T

11. 500 Answer Chemical Reactions
C. 4 grams reactant U + 3 grams reactant V --- 7 grams product W ??

12. 100 Question
Life Science
The Arctic environment has temperatures that range between -22° C and 6° C with snow covering some of the area. Which adaptation would most likely help a population of organisms survive this environment?
Long necks and tall legs
Large shell and leathery skin
Light colored fur and layers of blubber
Brightly colored feathers and webbed feet

13. 100 Answer Life Science
C. Light colored fur and layers of blubber ??

14. 200 Question
A student observes a tree with small needle-like leaves that stay green year round. Which conclusion can the student draw from the shape of the leaves?
The leaves of the tree do not perform photosynthesis.
The leaves of the tree have an illness that stunts their growth.
The leaves of the tree are nonfunctional.
The leaves of the tree are intended to reduce water loss.

15. 200 Answer Life Sciences
D. The leaves of the tree are intended to reduce water loss. ??

16. Which organisms are most likely to be the same approximate age?
300 Question Life Science
Compare the fossil layers
Which organisms are most likely to be the same approximate age?
1 and 3
3 and 5
2 and 4
5 and 6

17. 300 Answer Life Science
C. 2 and 4 ??

18. 400 Question Life Science
Two fossils that appear to be from the same type of organism are found in two different layers of rock. The layers of rock are shown here.
Which can be determined from the location of the fossils?
The prey of the organisms
The predators of the organism
The cause of death for each organism
The relative age of each organism

19. 400 Answer Life Science
D. the relative age
of each organism ??

20. 500 Question Life Science To what class does the organism belong?
Cestoda B. Gastropoda
C. Trematoda D. Bivalvia

21. 500 Answer Life Science
B. Gastropoda ??

22. 100 Question Forces of Nature
What keeps earth in its orbit?
The rotation of earth
The gravity of the sun
The revolution of the moon
The gravity of the moon
100 Question Forces of Nature

23. 100 Answer Forces of Nature
B. The gravity
of the sun ??

24. 200 Question Forces of Nature
A nuclear power plant has recently been built to generate electricity for a town located near several small lakes. Which is not a benefit of this nuclear power plant being built?
The cost of the electricity will decrease.
The loss of habitat for local wildlife.
The heating of homes will be easier.
The nuclear power plant will supply jobs.

25. 200 Answer Forces of Nature
B. The loss of habitat for local wildlife. ??

26. 300 Question Forces of Nature
A student coils a copper wire around a bar magnet. Which action will cause the device to generate electricity?
A. The student connects the copper wire to a light bulb.
B. The student insulates the copper wire with plastic.
C. The student uses a horseshoe magnet instead of a bar magnet.
D. The student moves the bar magnet through the copper wire coils.

27. 300 Answer Forces of Nature
D. The student moves the bar magnet through the copper wire coils. ??

28. 400 Question Forces of Nature
Wire coils spinning between two magnets will produce
cold
electricity
steam
chemicals

29. 400 Answer Forces of Nature
B. Electricity ??

30. 500 Question Forces of Nature
Which diagram shows an apparatus that is correctly set up to produce and measure electricity?

31. 500 Answer Forces of Nature??

32. 100 Question Solids, Liquids , Gases Oh My!
The graph below represents the percentages of gases that make up the atmosphere of Earth.
Which gas is represented in the portion labeled 1 on the graph?
Argon
Hydrogen
Nitrogen
Oxygen

33. 100 Answer Solids, Liquids , Gases Oh My!
C. Nitrogen ??

34. 200 Question Solids, Liquids , Gases Oh My!
Which diagram best shows the type of particle arrangement associated with a gas?

35. 200 Answer Solids, Liquids , Gases Oh My!??

36. 300 Question Solids, Liquids , Gases Oh My!
A student performed a classroom investigation by mixing a purple liquid and a white powder. Diagrams of the setup and the resulting blue solid are shown.
The student could best classify this reaction as a
Physical change B. Weight change
C. mass change D. Chemical change

37. 300 Answer Solids, Liquids , Gases Oh My!
D. Chemical change ??

38. 400 Question Solids, Liquids , Gases Oh My!
A student designs an experiment to test the acidity of the water in several ponds near an industrial area. Which tool would best help a student obtain accurate data?
Oxygen probe
Metric ruler
pH indicator
Heat sensor

39. 400 Answer Solids, Liquids , Gases Oh My!
C. pH indicator ??

40. 500 Question Solids, Liquids , Gases Oh My!
Which properties most likely indicate that a substance is a base?
Releases hydrogen gas and reacts with metals
Turns red litmus blue and conducts an electric current
Turns blue litmus red and conducts an electric current
Has a pH below seven and corrodes a nail

41. 500 Answer Solids, Liquids , Gases Oh My!
B. Turns red litmus blue and conducts an electric current ??
(Bases feel slippery, change litmus blue, and become less basic when mixed with acids)

42. 100 Question odds and ends
The main biofuel on the market today is ethanol, a fuel made from corn. Which type of bioengineered product is ethanol?
Adaptive
Assistive
Resistant
Manipulated

43. 100 Answer odds and ends
Adaptive ??

44. 200 Question odds and ends
Which statement best describes what the planet Saturn, a lizard, and a steaming kettle have in common?
All are made of atoms.
All are multicellular organisms.
All are at the same internal temperature.
All produce their own energy without help.

45. 200 Answer odds and ends
All are made of atoms? ??

46. 300 Question Odds and Ends
A student observes that a gas is formed when chemical Y is added to chemical Z in the lab. The student’s observation of a new product being formed is the common outcome of all
Physical changes
Chemical changes
Mass changes
Phase changes

47. 300 Answer Odds and Ends
B. Chemical Changes ??

48. 400 Question Odds and Ends
The molecular arrangement of a solid is best represented in
Diagram 3
Diagram 1
Diagrams 1 and 2
Diagrams 2 and 3

49. 400 Answer Odds and Ends
B. Diagram 1 ??

50. 500 Question Odds and Ends
A 5-gram sample of water occupies 5 milliliters of space in a beaker.
Using the formula, what is the density of the water sample?
1 gram/milliliter
5 grams/milliliter
10 grams/milliliter
25 grams/milliliter

51. 500 Answer odds and ends
A. 1 gram/milliliter ??