Copyright

STAAR Science - Grade 8: Matter & Energy Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. What can an herbivore be categorized as?

Question 2 2. The process by which plants use the sun's energy to make sugar and oxygen from carbon dioxide and water is referred to as ....

Question 3 3. Which of the following is an element?

Question 4 4. What constitutes a food web?

Question 5 5. What is an electron shell?

Page 2

Question 6 6. What is the basic equation for density?

Question 7 7. CaF2 is a(n)

Question 8 8. In a typical ecosystem, what percentage of the energy produced by the autotrophs then consumed by the primary consumers will be passed along to the secondary consumers?

Question 9 9. What is an atom?

Question 10 10. What are the properties of a solid?

Page 3

Question 11 11. Which of the following statements is true?

Question 12 12. Ocean water is a good example of a mixture because _____

Question 13 13. Where does much of solar energy go as it is passed along the energy pyramid?

Question 14 14. Which of the following statements is NOT true about molecules?

Question 15 15. Which of the following quantifies the energy transferring from one organism to another?

Page 4

Question 16 16. What is the correct general formula for an alkane?

Question 17 17. Which of the following organisms is a primary consumer of a prickly pear cactus?

Question 18 18. What are the characteristics of a gas?

Question 19 19. Which of the following trophic levels contains the lowest amount of original solar energy?

Question 20 20. _____ properties of matter can be determined without changing composition, while _____ properties of matter must change the composition of matter.

Page 5

Question 21 21. What is the maximum number of covalent bonds carbon can form?

Question 22 22. If Argon is a noble gas and its atomic number is 18, how many electrons can be found in the valence level?

Question 23 23. Which of the following is a DENSE material?

Question 24 24. How much energy is transferred from a plant to an herbivore that eats it?

Question 25 25. Which of the following is not an organic compound?

Page 6

Question 26 26. Molecules are made of _____ , while compounds are made of _____ .

Question 27 27. The ability of iron to react to oxygen is an example of _____

Question 28 28. Approximately how much original solar energy remains at the top of the energy pyramid?

Question 29 29. What is the maximum number of electrons that can occupy the 2s orbital?

Question 30 30.

Given the following information, which element(s) are most likely to lose electrons?

I. Iodine is a member of Group VII (halides).

II. Strontium is located in the second column of the periodic table.

III. Selenium has six valence electrons.

STAAR Science - Grade 8: Matter & Energy Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

STAAR Science - Grade 8: Test Prep & Practice  /  Science Courses
Support