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September 9, 2009 Obj – Differentiate between various forms of matter. Warm-Up – What is matter? Reminders – HW – Elements, Compounds & Mixtures Graphing.

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Presentation on theme: "September 9, 2009 Obj – Differentiate between various forms of matter. Warm-Up – What is matter? Reminders – HW – Elements, Compounds & Mixtures Graphing."— Presentation transcript:

1 September 9, 2009 Obj – Differentiate between various forms of matter. Warm-Up – What is matter? Reminders – HW – Elements, Compounds & Mixtures Graphing Quiz today!

2 What is Matter?

3 Matter Chemistry is the study of matter and how it changes Matter is anything that has mass and occupies space

4 Classifying Matter Organize the items on your desk into groups based on what you know about them.

5 September 11, 2009 Obj – Understand Matter Warm-Up – Differentiate between a pure substance and a mixture. Reminders – Matter Quiz on Monday

6 Classifying Matter – Concept Map Prepare a concept map showing the relationships among the following terms and the items in front of you. Include these terms in your concept maps: Compound, Element, Heterogeneous, Matter, Mixture, Homogenous, Pure substance, Solution

7 Pure Substances Pure Substances: matter with a fixed definite composition with exact definite properties. (example: distilled water) Elements Compounds

8 Pure Substances: Elements Elements - substances that cannot be broken down into simpler substances (pure) Atoms – smallest unit of an element that still retains its properties.

9 Pure Substance: Compounds Compounds -made of atoms of more than one element that have bonded together chemically (Example: Salt) Molecules are the smallest unit of a compound

10 Mixtures The properties of a mixture can vary because the composition of a mixture is not fixed. Mixtures can retain some of the properties of their individual substances. The properties of a mixture are less constant than the properties of a substance.

11 Heterogeneous and Homogeneous Mixtures Homogeneous mixture = a mixture that contains more than one type of matter and is the same throughout. Heterogeneous mixture = a mixture that contains more than one type of matter and is not the same throughout

12 September 14, 2009 Obj – Explore separating matter Warm-Up – What types of matter can be separated and why? What types of matter cannot be separated? Reminders – Quiz today, CE due Friday

13 Solutions, Suspensions and Colloids Based on the size of its largest particles, a mixture can be classified as a solution, a suspension, or a colloid. Solution: when substances dissolve and form a homogeneous mixture, the mixture that forms is a solution. Sugar in water Suspension – a heterogeneous mixture that separates into layers over time. Ex. Sand and water Colloid – a combination of small particles that do not separate as in a solution and larger particles that do separate as in a suspension. Ex. Milk, it will separate over time.

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15 Concept Map

16 Separating Mixtures Filtration – separates mixtures on the basis of particle size. Ex. Using a coffee filter to separate the ground coffee from the water when making a cup of coffee. Distillation – separates a mixture in a solution by boiling points. Ex. Evaporating the water from salt water separates the salt from the water leaving the salt behind.


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