1. Journal Entry: In a paragraph:
L.T: I can observe and distinguish between different
mixtures.
Journal Entry:
Observe the demo of mixing
Baking Soda (NaHCO3) with Water (H2O) and
b) Baking Soda and Vinegar (CH3COOH).
In a paragraph:
1- Give Qualitative Observations for each demo
2- Which combination created a chemical change? Explain
3- Which combination was only a physical change?.Explain

2. L.T: I can observe and distinguish between different
mixtures.
Mixture: two or more different materials, substances or objects mixed together without causing a chemical change. (no new molecules formed)
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3. L.T: I can observe and distinguish between different mixtures.
In a mixture, the molecules of the
different things do NOT combine!

4. (Het-er-o-jean-us) Mixture (Homo-jean-us) Mixture
L.T: I can observe and distinguish between different
mixtures.
Heterogeneous
(Het-er-o-jean-us) Mixture
(“Different”)
Homogeneous
(Homo-jean-us) Mixture
(“Same”)
Mixture that looks different. (You can see the different ingredients)
Mixture that looks the same. (You can NOT really see the different ingredients)
Mixtures

5. Inquiry: What are mixtures?
Conductor of heat and
electricity
Magnetic/non-magnetic
Color
Size and Shape
State of Matter (boiling, melting, freezing point)
Physical properties describe many differences between things.
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6. Air is a mixture of mostly nitrogen (N), oxygen(O)
Mixtures
Other times it is more difficult to see what is in a mixture, like with the air we breathe.
Air is a mixture of mostly nitrogen (N), oxygen(O)
carbon dioxide (CO2).
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7. What type of mixture is this? Why?
Inquiry: What are mixtures?
Dissolving salt in water: It’s hard to tell whether a new substance forms when salt dissolves in water.
What type of mixture is this? Why?
Homogeneous Mixture
Everything in the mixture
looks the same.
Heterogeneous Mixture
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8. Inquiry: What are mixtures?
Rocks are also examples of mixtures.
They are mixtures of different minerals.
Are these rocks homogeneous or heterogeneous mixtures?
Heterogeneous Mixtures. We can see the different parts

9. Inquiry: What are mixtures?
Solutions
Solutions: A mixture when one substance dissolves into another substance.
Solubility: The ability of something to dissolve.
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10. Inquiry: What are mixtures?
Soluble
Sugar is soluble
Salt is soluble
Both sugar and salt are soluble in water.
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11. A sugar solution tastes sweet A salt solution tastes salty
Inquiry: What are mixtures?
Soluble and Insoluble
A sugar solution tastes sweet
A salt solution tastes salty
You will not be able to see the sugar or salt in a solution …
Taste is a physical property and does not change.
… but you will be able to taste the difference!
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12. Soluble and Insoluble Insoluble: something that
will NOT dissolve.
Soluble: something that
WILL dissolve.
Salt
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13. Complete the Venn diagram using the examples below. Chocolate Milk
Cereal and Milk
Peanut butter and Jelly
Ice cream with sprinkles
Mac and cheese
Air
Soda
Heterog.Mix
Homog.Mix

14. L.T: I can review the different types of matter
Elements: Types of atoms Br Br Br
Vs.
Element and Atom
Element and Molecule

15. Chemical Vs. Physical L.T: I can review the different types of matter
Mixture:
Different substances physically
Put together. (NO new molecules)
Compound:
different atoms bonded together Cl
Heterogenous
looks diff.
Homogeneous:
looks the same H
Vs. O
Solution: made
when something
dissolves into
something else Br

16. L.T: I can review the different types of matter
Homogeneous Mixture
Solution
Salt

17. Pure substance vs. Mixture
L.T: I can review the different types of matter
Pure substance vs. Mixture
Mixture:
Different substances physically
Put together. (NO new molecules)
Pure substance:
Substance that is NOT a mixture
Heterogenous
looks diff.
Homogeneous:
looks the same
Vs.
Solution: made
when something
dissolves into
something else

18. L.T: I can review the different types of matter.
Substance
Heterog.
Mix
Homog.
Pure
Sub.
Solution
Elem.
Comp.
Mix.
Lead Metal
(Pb)
Table Salt
(NaCl)
Kool-Aid
Drink
Vegetable
Soup
Oxygen
Gas(O2)
Distilled
Water

19. L.T: I can review the different types of matter.
Substance
Heterog.
Mix
Homog.
Pure
Sub.
Solution
Elem.
Comp.
Mix.
Concrete
Gold (Au)
Brass Met.
(Alloy)
Flat 7-up
Soda
Raw egg
(cracked)
Air

20. L.T: I can review the different types of matter.
Substance
Heterog.
Mix
Homog.
Pure
Sub.
Solution
Elem.
Comp.
Mix.
Pure Iron
(Fe)
Iron Rust
(Fe2O3)
Soil
Baking
Soda
(NaHCO3)

21. Inquiry: How can different mixtures be separated?
Journal Entry
1) Draw a CO molecule
2) Draw C and O atoms
Vs. O O C C
The 2 different elements are
NOT connected.
They are just separate atoms.
The 2 different elements are
connected, creating a compound.
The chemical formula CO
tells us that the atoms are connected.

22. (combination of water and sugar molecules that are not bonded
Inquiry: How can different mixtures be separated?
In a mixture, the molecules of the
different things do NOT combine!
MIXTURE
(combination of water and
sugar molecules that are not bonded
PURE SUBSTANCE
(only H2O molecules)

23. Inquiry: How can different mixtures be separated?
Pure Substance
with compounds
Pure Substance
with elements
Mixture

24. Inquiry: How can different mixtures be separated?
Separating Mixtures
Colander
Sieve
Sifting:
using a sieve or colander to separate a mixture based on size.
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25. Inquiry: How can different mixtures be separated?
Sifting
When the sand and pebbles are separated, they are the same size and color as they were before they were mixed.
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26. Inquiry: How can different mixtures be separated?

27. Inquiry: How can different mixtures be separated?
Sulfur and Iron Filings
Sulfur
Iron filings
Sulfur and iron filings is a mixture too.
You could use a physical property of iron filings and of sulfur to separate them.
Can you think of one?
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28. Inquiry: How can different mixtures be separated?
Sulfur and Iron Filings
Magnetism!
If you move a magnet close to the mixture, it will attract the iron filings.
Magnetic
The sulfur powder will remain in a pile because it is not magnetic.
Non-magnetic
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29. Inquiry: How can different mixtures be separated?
Sulfur and Iron Filings
Iron filings are magnetic.
They maintain their magnetic property in the mixture.
Iron and sulfur can be separated without breaking bonds.
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30. Inquiry: How can different mixtures be separated?
If you heated this mixture of iron and sulfur a chemical reaction (chemical change) would occur producing iron sulfide.
heat
Fe (s) + S (s)  FeS
Iron and Sulfur mixture
Hot Plate

31. Inquiry: How can different mixtures be separated?
How can we separate a homogeneous mixture solution of salt and water?

32. Topics for quiz tomorrow
Vocabulary (Malleable, Ductile, Luster, Conductor, Insulator, Electricity, Ore, Alloy, Mixture, Heterogeneous Mix, Homogeneous Mix., Solution, Solubility, Soluble, Insoluble, Physical Change, Chemical Change, Reactants, Products, Fusion, Chemical Bond)
Metals vs. Non-Metals
Physical vs Chemical properties/changes
Homogeneous mix. Vs. Heterog. Mixture vs. Pure substance vs Element vs. Compound. Vs. Solution