1. Q: The smallest unit of matter

2. A: Atom

3. Q: Model of an atom

4. A: Bohr Diagram

5. Q: Atomic Number

6. A: # of Protons in the nucleus

7. Q: Electrical charge of the 3
atomic particles

8. A: Protons +
Electrons -
Neutrons 0

9. Q: Mass or Weight of the 3
atomic particles

10. A: Proton = 1amu
Neutron = 1 amu
Electron = 0 amu

11. Q: Atomic Mass (Weight)

12. A: # Protons + # Neutrons

13. Q: A change in which new matter
is formed (burning wood,
cooking food, rusting iron).

14. A: Chemical Change

15. Q: Combinations of different
elements that result from chemical
changes.

16. A: Compounds

17. Q: Characteristic properties of
matter (always the same)

18. A: Boiling point, melting point,
density, conductivity

19. Q: Non-characteristic properties
of matter (can vary with items)

20. A: Shape, mass, length,

21. Q: The ability to transmit energy
(electrical, heat, light)

22. A: Conductivity

23. Q: The amount of matter in a
given space.

24. A: Density

25. Q: Combining a solid with a
liquid to form a homogeneous
solution.

26. A: To Dissolve

27. Q: Matter made up of one kind
of atom.

28. A: Element

29. Q: When liquid changes to gas.

30. A: To Evaporate

31. Q: What is the Law of the
Conservation of Matter?

32. A: During an ordinary chemical
reaction, matter can’t be
created or destroyed.

33. Q: Anything that takes up space
and has mass.

34. A: Matter

35. Q: The amount of matter in a
body.

36. A: Mass

37. Q: Two or more materials
combined
but not chemically joined.
Can be separated by physical
means (filtering, boiling).

38. A: Mixture

39. Q: Mixture with parts evenly
distributed throughout

40. A: Homogeneous mixture

41. Q: Mixture with parts kept
separate

42. A: Heterogeneous mixture

43. Q: The smallest particle of a
substance that retains the
chemical and physical
properties of the substance and
is composed of two or more.

44. A: Molecule
Water/H2
O

45. Q: Chart of the more than 100
different elements found on
earth.

46. A: Periodic Table of the
Elements

47. Q: The ability of a substance to
dissolve in a liquid (ex: sugar).

48. A: Solubility

49. Q: Mixture in which particles of
the substances are evenly
mixed and cannot be separated
by means such as filtering.

50. A: Solution

51. Q: Mass X Gravitational force
(measured with a spring scale)

52. A: Weight
(measured in Newtons)

53. Q: How much matter is in an
object;
measured with a triple beam
balance.
Units: grams

54. A: Mass

55. Q: How much space an object
takes up; measured with a
graduated cylinder
or length x width x height.
Units:
Milliliter or cm3

56. A: Volume

57. Q: How much matter is packed
into a particular space.
Units: grams/milliliter or
grams/cm3

58. A: Density

59. Q: How do you calculate
density?

60. A: Density = Mass/Volume
Find
volume by
multiplying
Length X
Height X
Width
Or:

61. Q: Non-reversible change when
bonds are broken and
something new is produced.

62. A: Chemical change

63. Q: Reversible change where
substances keep their chemical
composition and no new
substances are produced.
(mixing, freezing, boiling, evaporation,
tearing, crushing)

64. A: Physical Change