1. $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $ 300 $400 $500 $100 $200 $300 $400 $500 $100 Atoms and Its Parts? Bonding Physical Changes Solar System Chemical Changes

2. All elements are composed of extremely small particles called.

3. What is atom?

4. These particles in an atom are in the nucleus

5. What is protons and neutrons?

6. These particles move around the nucleus.

7. What is electrons?

8. This is the charge of the nucleus of an atom.

9. What is positive?

10. Explain how you find the number of protons, neutrons, and electrons an element has.

11. Atomic number tells you the number of protons and electrons; subtract the atomic mass from the atomic number to get the number of neutrons

12. This is the part of the periodic table that gives us the number of valence electrons.

13. What is group number?

14. This is the type of bond that forms between two nonmetals when they share electrons.

15. What is covalent bond?

16. This is the type of bond that forms between a metal and a nonmetal.

17. What is an ionic bond?

18. This is what happens to reactivity as we move from left to right across the periodic table

19. What is reactivity decreases.

20. What kind of ions form when potassium and bromine bond. (Potassium loses and Bromine gains)

21. What is potassium becomes a positive ion and bromine becomes a negative ion?

22. Two or more substances that are physically blended together but are not chemically bonded are called

23. What is a mixture?

24. This is how you would separate a mixture of salt water?

25. What is boiling.

26. This is the reverse of melting.

27. What is freezing.

28. This is the phase change from a solid to a liquid.

29. What is melting?

30. This is the change directly from a gas to a solid without going thru the liquid phase.

31. What is deposition?

32. This is responsible for giving us day and night.

33. What is earth’s rotation?

34. These two forces keep the Earth revolving around the Sun.

35. What is gravity and inertia?

36. This occurs when the moon passes between the Sun and Earth and the moon casts a shadow on Earth’s surface.

37. What is a solar eclipse.

38. This is the force that is most responsible for the tides on the Earth.

39. What is the moon’s gravity.

40. How would you illustrate a lunar eclipse.

41. Sun – Earth – Moon

42. This is a reaction when a substance absorbs thermal energy.

43. What is an endothermic reaction?

44. This is an inherited trait that increases an organism’s chance of survival.

45. What is adaptation?

46. This shows the same amount of atoms on the reactant side as the product side.

47. What is the law of conservation of mass?

48. These are 5 signs that a chemical reaction took place.

49. What is formation of bubbles, formation of a precipitate, change in color, change in odor, absorb/release thermal energy, and release of light?

50. What does a severe change in the environment, the inability to reproduce successfully, and a lack of variation cause

51. Extinction