Science Benchmark: The weight of an object is always equal to the sum of its parts, regardless of how it is assembled. In a chemical reaction or physical change matter is neither created nor destroyed. When two or more materials are combined, either a chemical reaction or physical change may occur. Chemical reactions are often indicated when materials give off heat or cool as they take in heat, give off light, give off gas, or change colors. In a chemical reaction, materials are changed into new substances. In a physical change a new substance is not formed.
WEEK OF Feb. 11-15
MONDAY-
PHYSICAL & CHEMICAL CHANGES:
MONDAY-
- REVIEW BASIC LAWS: The TOTAL WEIGHT of an object = the WEIGHT OF ITS INDIVIDUAL PARTS when taken apart. Matter DOES NOT CHANGE WEIGHT when it undergoes freezing or melting. The total weight of materials before a chemical reaction = the weight of materials after the reaction (if nothing is allowed to escape) The weight of the reactants = the total weight of the products.
- Bottle, balloon, vinegar, baking soda (weight of reactants = total weight of the products)
- Atoms, Molecules, Elements, Compounds, Protons, Neutrons, Electrons
PHYSICAL & CHEMICAL CHANGES:
- Reader's Theater Physical and Chemical Changes
- Students will understand that chemical and physical changes occur in matter.
- Eco Peanut Puzzle/styrofoam cup
- SCIENCE SAFETY
- PHYSICAL CHANGE is a change is the structure of a substance. After the change it keeps all of its properties. NO new substance is formed. EVIDENCE OF A PHYSICAL CHANGE- shape, size, or phase changes. ONLY the physical appearance has changed; it is still the same substance.
- Pictures will see pictures of physical changes. What is happening in these images? What are physical changes that occur in our everyday lives?
- Students will draw an example of a physical change that occurs around us in our every day life.
- Physical Change foldable
- Physical Changes in Matter Passage and questions
- VALENTINE'S DAY
- Changing Matter: Physical Changes-(glue in notebook)
- Ivory Soap Demo
- Memory Poem-" A PHYSICAL CHANGE changes how things look, Like tearing the pages in a book, Or freezing a liquid, like water to ice, Or painting a house to make it look nice."
- Physical Change Evidence Circles
- Physical Properties and Physical Change foldable
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Standard 1:
- Students will understand that chemical and physical changes occur in matter. Describe that matter is neither created nor destroyed even though it may undergo change.
- Evaluate evidence that indicates a physical change has occurred. Investigate evidence for changes in matter that occur during a chemical reaction.