1. Element, Compound, Mixture
review

2. 3 classes of matter
Elements
Compounds
Mixtures

3. 3 classes of matter Elements pure made of one type of atom Compounds
made of two or more different types of atoms
CHEMICALLY combined/bonded together
Can be separated by CHEMICAL REACTIONS
Mixtures
physical combinations of different substances
can be separated by exploiting the different physical properties of different components of the mixture.

4. Identify the element, compound & mixture

5. Identify the element, compound & mixture
H2O
salad
C6H12O6 Fe
Salt Water
Alloys

6. Identify the element, compound & mixture
H2O compound
salad mixture
C6H12O6 compound
H2 element
Salt Water mixture
Alloys mixture

7. Types of Mixtures Homogeneous Heterogeneous
Sort the descriptions into each class:
looks the same throughout the mixture
can identify different components
components distributed equally
components distributed unequally/unevenly
solution
air
brass
soil

8. Types of Mixtures Homogeneous Heterogeneous
looks the same throughout the mixture soil
components distributed equally can identify different components
solution components distributed unequally
air
brass

9. What type of mixture is this?

10. What type of mixture is this?
this is a heterogeneous mixture because the components are not distributed equally

11. Coffee is a(n)
Element Compound Mixture Homogeneous mixture Heterogeneous mixture Solution

12. Coffee is a(n)
Element Compound Mixture Homogeneous mixture Heterogeneous mixture Solution

13. Sulfuric Acid (H2SO4) is
Element Compound Mixture Homogeneous mixture Heterogeneous mixture Solution

14. Sulfuric Acid (H2SO4) is
Element Compound Mixture Homogeneous mixture Heterogeneous mixture Solution

15. Iron (Fe) is
Element Compound Mixture Homogeneous mixture Heterogeneous mixture Solution

16. Iron (Fe)
Element Compound Mixture Homogeneous mixture Heterogeneous mixture Solution

17. The best example of a solution is:
Baking Soda (NaHCO3)
Coca cola
Chex mix
Iron filings (Fe)

18. The best example of a solution is:
Baking Soda (NaHCO3)
Coca cola
Chex mix
Iron filings (Fe)

19. How to read a formula H2O NaOH H2 Ag O2 H2SO4
What are the subscripts for each
of the following formulas?
What if an element doesn’t have
a subscript?
What information does the
subscript tell you?

20. How to read a formula H2O NaOH H2 Ag O2 H2SO4
What are the subscripts for each
of the following formulas?
What if an element doesn’t have
a subscript? We assume it’s a “1”
H2O1
Na1O1H1
What information does the
subscript tell you? The number of
atoms of each element in a
molecule.

21. What is a pure substance?

22. What is a pure substance?
Pure substances are made of only one type of substance. Elements and compounds are pure substances. Every particle of an element or a compound is identical…..PURE!
Mixtures are not pure, they are physical combinations of different elements and compounds.

23. How do you break down an…
Element?
Compound?
Mixture?

24. How do you break down an…
Element? You CAN’T break an element into simpler parts using natural processes. Compound? compounds are broken into simpler parts through chemical reactions H2O  H2 + O2 Mixture? because they are physically combined, you can use the physical properties of different components to separate the parts of a mixture.

25. Processes used to separate mixtures:
sifting – uses differences in size to separate components
filtering – uses very small pores in the filter to separate components. Frequently used in conjunction with solubility
distillation – evaporation and condensation of different parts of a mixture. Differences in boiling points are exploited.
Physical properties used:
magnetism – to separate iron filings
solubility
melting & boiling points

26. Element, Compound, Mixture?
Chicken Noodle Soup

27. Element, Compound, Mixture? Heterogeneous
Chicken Noodle Soup

28. Element, Compound, Mixture?
Salt NaCl

29. Element, Compound, Mixture?
Salt NaCl

30. Element, Compound, Mixture?
Copper Cu

31. Element, Compound, Mixture?
Copper Cu

32. Element, Compound, Mixture?
Soil

33. Element, Compound, Mixture? Heterogeneous
Soil

34. Element, Compound, Mixture?
Sugar C₆H₁₂O₆

35. Element, Compound, Mixture?
Sugar C₆H₁₂O₆

36. Element, Compound, Mixture?
Water H₂O

37. Element, Compound, Mixture?
Water H₂O

38. Element, Compound, Mixture?
Air

39. Element, Compound, Mixture? Homogeneous/solution
Air

40. Element, Compound, Mixture?
Gasoline

41. Element, Compound, Mixture? Homogeneous/solution
Gasoline

42. Element, Compound, Mixture, or Solution?
Trail Mix

43. Element, Compound, Mixture? Heterogeneous
Trail Mix

44. Element, Compound, Mixture?
Kool-Aid

45. Element, Compound, Mixture? Homogeneous/solution
Kool-Aid

46. Element, Compound, Mixture?
Neon (Ne) Gas in the Sign

47. Element, Compound, Mixture?
Neon Gas in the Sign

48. Element, Compound, Mixture?
Hydrogen Peroxide

49. Element, Compound, Mixture?
Hydrogen Peroxide

50. Element, Compound, Mixture?
Lucky Charms Cereal

51. Element, Compound, Mixture? Heterogeneous Mixture
Lucky Charms Cereal

52. Element, Compound, Mixture?
Oxygen

53. Element, Compound, Mixture?
Oxygen