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L.T: I can observe and distinguish between different mixtures. Journal Entry : Observe the demo of mixing Baking Soda (NaHCO 3 ) with Water (H 2 O) and b ) Baking Soda and Vinegar (CH 3 COOH). In a paragraph: 1- Give Qualitative Observations for each demo
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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
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) Next >
L.T: I can observe and distinguish between different mixtures. In a mixture, the molecules of the different things do NOT combine!
L.T: I can observe and distinguish between different mixtures. Mixtures
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. Next >
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). Next >
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 Next >
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
Inquiry: What are mixtures? Solutions Solutions: A mixture when one substance dissolves into another substance. Solubility: The ability of something to dissolve. Next >
Inquiry: What are mixtures? Soluble Sugar is soluble Salt is soluble Both sugar and salt are soluble in water. Next >
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! Next >
Soluble and Insoluble Insoluble: something that will NOT dissolve. Soluble: something that WILL dissolve. Salt Next >
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 Homog.Mix Heterog.Mix
L.T: I can review the different types of matter Elements: Types of atoms Br Br Br Vs. Element and Atom Element and Molecule
L.T: I can review the different types of matter Chemical Vs. Physical 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
L.T: I can review the different types of matter Homogeneous Mixture Solution Salt
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
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.
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)
Inquiry: How can different mixtures be separated? Pure Substance with compounds Pure Substance with elements Mixture
Inquiry: How can different mixtures be separated? Separating Mixtures Colander Sieve Sifting: using a sieve or colander to separate a mixture based on size. Next >
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. Next >
Inquiry: How can different mixtures be separated? Sulfur and Iron Filings Sulfur Iron filings Sulfurand iron filings is a mixture too. You could use a physical property of iron filings and ofsulfurto separate them. Can you think of one? Next >
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 Next >
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. Next >
Inquiry: How can different mixtures be separated? heat Fe (s) + S (s) FeS Iron and Sulfur mixture Hot Plate If you heated this mixture of iron and sulfur a chemical reaction (chemical change) would occur producing iron sulfide.
Inquiry: How can different mixtures be separated? How can we separate a homogeneous mixture solution of salt and water?
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
