Physical and Chemical Properties Worksheet



Physical and Chemical Properties WorksheetCircle the choice that best completes the statement or answers the question.1. (Physical or Chemical or both) properties describe matter. 2. (Physical or Chemical or both) properties of a substance can be easily observed.3. One can use their five senses to determine the (Physical or Chemical or both) properties of a substance. 4. (Physical or Chemical or both) properties usually describe how a substance reacts.5. (Physical or Chemical or both) properties are not as easy to observe.6. (Physical or Chemical or both) properties can be used to identify substances.In the blank provided, identify if the following are chemical or physical properties:7. Oxygen is odorless and colorless_________________________8. Copper turns green when exposed to the environment_________________________9. The piece of metal is magnetic _________________________10. The density of water is 1.0 gram per cubic centimeter_________________________11. Diamonds are a very hard substance_________________________12. The tree is 8 meters high_________________________13. Sodium reacts very easily with other elements. _________________________14. The color of the ball is red_________________________15. Iron reacts with oxygen and forms rust_________________________161. The boiling point of water is 100 degrees C_________________________17. Baking soda reacts with vinegar_________________________18. The gas is flammable_________________________19. Oxygen is a gas_________________________20. Argon is not very reactive_________________________21. Nitrogen is a colorless gas_________________________22. The silver spoons tarnished and turned dark_________________________23. The piece of metal is magnetic _________________________24. A student’s shirt suddenly bursts into flames. _________________________25. Silver necklaces tarnish and turn green. _________________________Chapter 1 section 1 Enrichment: Describing MatterRead the passage and study the diagram below it. Answer the questions that follow.Degradable PlasticsA chemical property is a characteristic of a substance that describes its ability to change into different substances. One way in which substances are changed is to be broken down into simpler substances. Materials that are degradable can be broken down easily in the environment. Most plastics are not degradable, remaining in the environment for a long time. But Today there are two main types of plastics that are degradable: photodegradable (photo- means “light”) and biodegradable (bio- means “life”). Photodegradable plastics break down into smaller pieces after exposure to a certain amount of sunlight. Biodegradable plastics contain natural substances in addition to the plastic. The most common additive is cornstarch. Cornstarch is made up of sugar that is broken down by microorganisms. When this happens, the plastic breaks down into smaller pieces.One area in which degradable plastics are being used today involves erosion control. In places where land has been cleared, such as during highway construction, erosion control blankets made with layers of degradable plastic and straw can be placed on the soil. The blanket keeps the soil from being washed away until new plants have a chance to grow. Once the blanket has broken down, the plants’ roots will be able to keep the soil in place.Do you think photodegradable plastic that is buried in a landfill will break down quickly? Explain._____________________________________________________________________________________________________________________________________________Most landfills contain very little air and moisture, which many microorganisms need to survive. How do you think these conditions affect biodegradable plastic buried in a landfill?____________________________________________________________________________________________________________________________________________________3.Why do you think it is important that an erosion control blanket break down after a few weeks or months?____________________________________________________________________________________________________________________________________________________ ................
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