Physical & Chemical Properties
Guiding Question: What happens when substances are mixed?
All elements are unique because they are made of different types of atoms. Atoms are the building blocks of matter.
PHENOMENON
Notes
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READING RESOURCES
Labs
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Chemical and Physical Changes Lab - Watch the videos below to complete or review the lab. Pay attention to which one you are viewing. Some may be slightly different from in class, but it's the same type of observation.
Milk & Vinegar
Shaving Cream
Disappearing Styrofoam
Disappearing Sugar
Instant Snow
Cranberry Juice
Cooking Sugar & Oyxgen
Magnesium or Zinc & Hydrochloric Acid
Cracker vs. Hand
Shine a Penny
Glass Apparatus
Disappearing Salt
Copper Chloride (Solution) & Aluminum
Endothermic vs. Exothermic Reaction Lab
Part 1: Hydrogen Peroxide and Yeast.
Part II: Baking Soda and Vinegar
Absent?
Watch the videos to see what happened in the lab. Use the table on the right for your data.
Plop, Plop, Fizz, Fizz Lab
Reaction in a Baggie Lab
Flame Test Demonstrations
VIDEOS
VOCABULARY
- chemical bond - the force that holds two atoms together
- ductile - A term used to describe a material that can be pulled out into a long wire.
- solubility - the ability of one substance to dissolve in another substance
- malleable - easy to change shape or bend
- corrosion - the gradual wearing away of a metal element due to a chemical reaction
- ph - a measure of how acidic or basic a solution is
- reactivity - the ease and speed with which an element combines, or reacts, with other elements and compounds
- chemical reaction - the process that changes one set of chemicals into another set of chemicals
- chemical properties - characteristics that can only be observed when one substance changes into a different substance
- physical properties - the characteristics of a substance that can be observed or measured without changing the substance
- physical change - a change of matter from one form to another without a change in chemical properties
- chemical change - a change in which one or more substances combine or break apart to form new substances
- precipitate - a solid that forms from a solution during a chemical reaction
- chemical equation - A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
- reactants - A starting material in a chemical reaction
- products - The elements or compounds produced by a chemical reaction.
- acids - they contain higher concentrations of hydrogen ions than pure water and have pH values below 7
- bases - Compounds that reduce the concentration of hydrogen ions in a solution. They are above 7 on the ph scale
- exothermic process - chemical reaction or physical change that releases heat
- endothermic process - chemical reaction or physical change that absorbs heat
- flammability - the ability of a substance to burn