1 / 18

Properties of Matter

Properties of Matter. Section 15.2. Warm up . What is matter? What are the three states of matter? Fill in the tables with one difference between each of the following: Element and compound Compound and mixture. Objectives . Identify substances using physical properties.

tori
Télécharger la présentation

Properties of Matter

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Properties of Matter Section 15.2

  2. Warm up • What is matter? • What are the three states of matter? • Fill in the tables with one difference between each of the following: Element and compound Compound and mixture

  3. Objectives • Identify substances using physical properties. • Compare and contrast physical and chemical changes. • Identify chemical changes. • Determine how the law of conservation of mass applies to chemical changes.

  4. Introduction • What properties can be used to describe the items in the following figure?

  5. Physical properties • Any characteristic of a material that you can observe without changing the identity of the substance. • Examples of physical properties are: Color, size, shape, mass, volume, density, melting point, boiling point, attraction to magnet and the ability to flow.

  6. Some physical properties describe the behavior of materials or substances. • Examples are copper and gold.

  7. Using physical properties to separate • How can you separate a mixture of iron filling and sand? • How can you separate a mixture of seeds and sand?

  8. Physical change

  9. Physical change

  10. Use physical change to separate Distillation

  11. Chemical properties and changes • A chemical property is a characteristic of a substance that indicates whether it can undergo a chemical change. • Examples: flammability,

  12. Detecting chemical change • Chemical change: a change of one substance to another. • Examples of chemical change

  13. Chemical change

  14. Clues of chemical change • Smell, • change in color • formation of gas • formation of a precipitate • pop sound • production of heat • cooling • formation of bubbles, light, foaming…

  15. Using chemical change to separate • Cleaning tarnished silver. • Tarnish is a chemical reaction between silver metal and sulfur compounds in the air. • We can remove tarnish by placing the tarnished silver item in warm water, baking soda and aluminum foil. • Many metals are separated from their ores and then purified by using chemical changes.

  16. The conservation of mass • Matter is neither created nor lost during a chemical change. • The mass of all substances that are present before a chemical change equals the mass of all substances that remain after the chemical change. • Example: when a chemical reaction takes place, the total mass of reactants equals the total mass of products. If 18 g of hydrogen react completely with 633 g of chlorine, how many grams of HCl are formed? H2 + Cl2 2 HCl

  17. Wrap up • What is a physical property? • What is a chemical property? • Distinguish between a physical and chemical change. • Examples of a physical and chemical change and properties. • Law of conservation of mass

  18. Home Work • Page: 465 # 1 to 6 • Practice problem page: 463 # 1 and 2 • Quiz in section 15.2

More Related