EOG Review

1. Students will need a calculator and a periodic table! EOG Review Science 8th grade

2. An atom is composed of protons, electrons, and neutrons. What is the electric charge on the proton? • 0 • -1 • +1 • +2

3. The organelle that is responsible for making glucose is the ____ • Mitochondria • Chloroplast • Ribosome • Lysosome

4. A rock has a mass of 230 grams. It is placed into a graduated cylinder that originally has 50mL of water in it. The volume now reads 63mL. What is the object’s density? • 2990 g/mL • 4.60 g/mL • 3.65 g/mL • 17.7 g/mL

5. The cellular process that breaks down glucose to produce energy is______ • Respiration • Photosynthesis • Mitochondria • Chloroplast

6. If table salt (NaCl) is the product of the reaction between pure Sodium (Na) and Chlorine gas (Cl2), which balanced chemical formula represents this reaction? • 2NaCl  2Na + Cl2 • NaCl  Na + Cl2 • 2Na + Cl2  2NaCl • Na + Cl2  NaCl

7. Which of the following is not one of the statements of the Cell Theory? • All living things are made up of one or more cells. • Cells perform basic life functions. • Cells come from other living cells. • All cells are capable of making glucose.

8. The atomic number of Carbon-13 (+2) is 6. How many electrons does this atom have? • 6 • 8 • 7 • 4

9. Most cells obtain water through which process? • Diffusion • Osmosis • Exocytosis • Active transport

10. A substance that is made up of two or more elements is called ____ • An element • A compound • A mixture • A solution

11. Which of the following is produced as a result of respiration? • Glucose • Oxygen • Energy • Water

12. A wooden block has a density of 2.4 g/cm3. If the block has a length of 2cm, a height of 1.1cm and a width of 4cm, what is the wooden block’s mass? • 21.12 g • 19.20 g • 0.27 g • 3.67 g

13. Which of the following is not one of the main layers of the Earth? • Core • Lithosphere • Crust • Mantle

14. Hillary goes to the doctor for a routine check-up and is surprised to find out that she has the varicella virus in her blood. Because she has not exhibited any symptoms of this disease, Hillary is considered to be ____ • A vector • A carrier • Quarantined • Not contagious

15. Animal cells and plant cells differ because animal cells ____ • Have mitochondria, and plant cells do not. • Have chloroplasts, and plant cells do not. • Have lysosomes, and plant cells do not. • Have cell walls, and plant cells do not.

16. Which of the following organelles is responsible for providing the cell with glucose? • Mitochondria • Photosynthesis • Chloroplast • Respiration

17. If an irregular shaped object has a volume of 22cm3 and a mass of 18.6 g, what is the object’s density? • 0.845 g/cm3 • 1.18 g/cm3 • 409.2 g/cm3 • 3.40 g/cm3

18. Which layer of the Earth has the highest density? • Crust • Mantle • Core • Asthenosphere

19. Mary noticed that plants grew taller in her sunny front yard than in her shady backyard. She decides to perform an experiment that tests the amount of light and its effect on plant growth. Which of the following would be the best hypothesis for her experiment? • If you increase the amount of light that a plant is exposed to, then the plant will grow less. • If you decrease the amount of light that a plant is exposed to, then the plant will grow more. • If you increase the amount of light that a plant is exposed to, then the plant will grow more. • If you increase the amount of water that a plant is given, then the plant will grow more.

20. Tectonic plates make up which of the following layers of the Earth? • The crust only • The mantle only • The crust and the top portion of the mantle • The top portion of the mantle and all of the core

21. Where would a plant cell store any excess glucose or water? • The golgi apparatus • The cytoplasm • The central vacuole • The cell membrane

22. Which part of the experiment does the person performing the experiment have control over? • The independent variable • The dependent variable • The results • The conclusion

23. Which of the following statements about viruses is false? • Viruses are smaller than bacteria. • Viruses can change their DNA. • Viruses can reproduce on their own. • Viruses do not affect living things.

24. The atomic number of an atom is the number of ____ • Protons • Neutrons • Protons and neutrons combined • Electrons and neutrons combined

25. An ion is an atom ____ • That has an unequal number of protons and electrons. • That has an unequal number of protons and neutrons. • That has the same number of protons and neutrons. • That has the same number of protons and electrons.

26. Which of the following is true regarding photosynthesis and respiration? • Photosynthesis occurs in the mitochondria; respiration occurs in the chloroplasts. • Photosynthesis breaks down glucose; respiration makes glucose. • Photosynthesis occurs in the chloroplasts; respiration occurs in the mitochondria. • All cells can undergo both photosynthesis and respiration.

27. A producer is an organism that can ____ • Eat other organisms. • Make glucose for its cells. • Reproduce. • Feeds off of dead or decaying matter.

28. Which of the following is produced as a result of photosynthesis? • Carbon dioxide • Water • Oxygen • Heat

29. The process that causes tectonic plates movement is ____ • Conduction • Convection • Radiation • Continental drift

30. Which layer of the Earth has the lowest density? • Crust • Mantle • Core • Asthenosphere

31. Divergent boundaries cause which of the following to form? • Mountains • Earthquakes • New crust • Trenches

32. Particles floating in water that may make the water cloudy is known as ___ • Concentration • Turbidity • Cohesion • Adhesion

33. Which of the following is a change in physical composition? • A brick being ground up into fine dust. • A purple substance forming when iodine is added to cornstarch. • Vinegar bubbling when baking soda is added. • An iron nail rusting.

34. Which of the following is a change in chemical composition? • An aluminum cube is rolled into a flat sheet. • Liquid water freezing to form solid ice. • Solid butter melting on the stove. • A white precipitate forming as a result of the combination of two liquids.

35. In the chemical formula H2SO4, what does the subscript 4 represent? • The number of hydrogen atoms in sulfuric acid. • The number of sulfur and oxygen atoms in sulfuric acid. • The number of oxygen atoms in sulfuric acid. • The number of hydrogen and oxygen atoms in sulfuric acid.

36. Hydrogen peroxide (H2O2), if left unopened, will eventually form water (H2O) and oxygen gas (O2). What is the balanced chemical equation for this reaction? • H2O2 H2O + O2 • H2O + O2  H2O2 • 2H2O2  2H2O +O2 • 2H2O + O2  2H2O2

37. Hydrogen peroxide (H2O2), if left unopened, will eventually form water (H2O) and oxygen gas (O2). What type of chemical reaction is this? • Combustion reaction • Acid-base neutralization reaction • Decomposition reaction • Synthesis reaction

38. Which of the following is not one of the three processes of the hydrologic cycle? • Condensation • Evaporation • Collection • Precipitation

39. Where is most freshwater located on Earth? • Polar ice caps • Groundwater • Rivers • Lakes

40. An atom is composed of protons, neutrons, and electrons. What is the electric charge on an electron? • 0 • +1 • -1 • +2

41. The following organelles are found in ALL cells except ____ • Cell membrane • Mitochondria • Cytoplasm • Nucleus

42. Which of the following statements is true regarding prokaryotic cells and eukaryotic cells? • Prokaryotic cells have a nucleus; eukaryotic cells do not have a nucleus. • Prokaryotic cells are able to make glucose; eukaryotic cells are not. • Prokaryotic cells do not have a nucleus; eukaryotic cells have a nucleus. • Prokaryotic cells are not able to make glucose; eukaryotic cells can.

43. The process of cells making glucose is known as__ • Respiration • Photosynthesis • Mitochondria • Chloroplasts

44. Animal cells and plant cells differ because animal cells ___ • Have mitochondria, and plant cells do not. • Have chloroplasts, and plant cells do not. • Have lysosomes, and plant cells do not. • Have cell walls, and plant cells do not.

45. Which of the following is a change in physical composition? • Water freezing in the freezer. • Wood burning in a fireplace. • A nail rusting. • Garbage decomposing in a landfill.

46. Which of the following statements is false regarding viruses? • Viruses have DNA. • Viruses are capable of reproducing. • Viruses have cells. • Viruses come from other viruses.

47. Which of the following is not one of the main categories of elements on the periodic table? • Nonmetals • Transition metals • Metals • Metalloids

48. The elements in the periodic table are organized by___ • Their atomic numbers. • Their names. • Their atomic mass numbers. • Their activity levels.

49. A metal ball has a mass of 35g. To determine the volume, a graduated cylinder was filled up with 25 mL of water and the metal ball was placed inside. If the volume increased by 7mL, what is the object’s density? • 245 g/mL • 1.4 g/mL • 5.0 g/mL • 1.09 g/mL

50. Which of the following statements is true regarding cellular respiration? • Respiration occurs in the chloroplasts of cells. • Respiration produces glucose for the cells to use. • Respiration breaks down glucose to get energy. • Respiration uses carbon dioxide.