1. Matter is defined as anything that …
2. A substance that cannot be broken down into simpler substances is …
3. The smallest unit of a substance that behaves like the substance is …
4. The chemical symbol for sulfuric acid is H2SO4. How many atoms are contained in each molecule of
sulfuric acid?
5. How many oxygen atoms are in one molecule of table sugar (C12H22O11)?
6. The chemical formula for water, H2O, means that each water molecule contains…
7. Which state of matter will hold its shape without a container?
8. The relationship between the mass m of a material, its volume V, and its density D is …
9. A sample of gold has a mass of 96.5 g and a volume of 5.00 cm3. The density of gold is ...
10. The science of what matter is made of and how it changes is called …
11. What are some physical properties of gold?
12. Which of the following is not an example of a physical property?
13. A substance has a mass of 360 g and a volume of 7.5 cm3. What is its density?
14. What are examples of physical properties?
15. What are examples of physical changes?
16. What are examples of chemical properties?
17. What are examples of chemical changes?
18. How many universes are known to exist?
19. What is a light-year?
20. What galaxy is our solar system a part of?
21. Galaxies can be classified based on what?
22. What shape is our galaxy classified as?
23. Clusters of galaxies are called what?
24. Who was the first scientist to propose that the universe in expanding?
25. What is red shift?
26. What is blue shift?
27. A star’s apparent brightness is dependent upon what?
28. How is a star formed?
29. What state will most stars in the Milky Way galaxy end up in?
30. What are quasars?
31. What are the three basic types of galaxies?
32. How can a star’s surface temperature be estimated?
33. How are stars held together?
34. When are objects attracted to each other (talk about charges)?
35. When are objects repelled from each other (charges)?
36. What two factors cause variance in electric force?
37. Every charged particle produces what?
38. Describe the behavior of electric field lines around a negatively charged particle.
39. What is potential difference measured in?
40. Describe the terminals of a battery.
41. What is (electrical) current?
42. What causes resistance?
43. What is the unit of resistance?
44. Describe the resistance of an insulator and of a conductor.
45. What happens to the resistance of a superconductor when its temperature drops below the critical
temperature?
46. Looking at conductors, insulators, superconductors, and semiconductors, rank them in order of
most resistance to least resistance.
47. Objects connected so that they form a single pathway for charges to flow are connected in what
kind of circuit?
48. What is a device that protects a circuit from a current overload?
49. A change in the color of a solution is a sign that what has happened?
50. A substance that undergoes a change in a chemical reaction is called what?
51. What happens during a chemical reaction?
52. In an exothermic reaction, energy is transferred how? (taken in from the surroundings or given out
to the surroundings)
53. Most of the energy in a combustion reaction is released in what form?
54. A chemical equation is balanced by changing or adding what? (choices: chemical symbols,
subscripts, coefficients, or reactants)
55. What is a synthesis reaction?
56. What is a decomposition reaction?
57. What are isotopes?
58. What are ions?
59. What elements are involved in ionic bonding? Covalent bonding? Metallic bonding?
60. Name the following compounds: NaCl, CF4, KBr, CO2, CsF2. Hint: Identify which type of compound
is being named- ionic or covalent?
61. Write the following formulas: carbon monoxide, lithium bromide, dinitrogen trioxide, sodium
fluoride, magnesium oxide