Before the break for the holidays students will have a test in math and science on Wednesday. We will review for the test tomorrow. Here is some helpful information to help prepare for the science test.
Evidence of a chemical change always includes A new substance being formed and may also include one or more of the following: An odor; Bubbles which indicate a gas has formed; an unexpected Color change; a Different temperature; and Energy in the form of light given off. Chemical changes cannot usually be reversed. The key difference between a chemical change and a physical change is that in a physical change no new substances are produced. On Wednesday's test, students will be asked to identify which foods should be on the menu at The Chemical Change Cafe. The Chemical Change Cafe only serves food which has undergone a chemical change. When analyzing whether or not a food can be placed on The Chemical Change Cafe's menu, students must give evidence to support their ideas. For example, trail mix can not be placed on the menu because it is a mixture and has not gone through a chemical change. Trail mix is not a new substance because it can be sorted into its orginal ingredients. Buttermilk biscuits can be served at The Chemical Change Cafe because they go through a chemical change. Evidence of a chemical change in biscuits includes bubbles formed by gas when the biscuits bake, an odor (aroma) produced by baking, and most importantly, a new substance is formed. Once the biscuits are baked, you cannot remove the individual ingredients used in the biscuit batter so the change is NOT reversible.
Are you and your child having trouble with multiplication? Try this site on lattice multiplication. It's not the way I learned multiplication, but sometimes it's easier for those who "don't get" traditional math.
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