2. A student travels a distance of 25 kilometers in a time of 5 hours. What is the average speed of this student during this trip?
3. A student travels a distance of 10 kilometers in 30 minutes. What is the average speed of this student in km/h?
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1. During an investigation on speed, a skateboard moves a distance of 1.8 meters in a time of 0.6 seconds. What is the average speed of the skateboard in m/s?
2. A student travels a distance of 25 kilometers in a time of 5 hours. What is the average speed of this student during this trip? 3. A student travels a distance of 10 kilometers in 30 minutes. What is the average speed of this student in km/h?
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1. What occurs during a chemical change? What is created?
2. Describe three signs of a chemical change. 3. Give an example of a chemical change and then tell me what was produced that lets you know this is a chemical change? (ex: baking soda and vinegar is a chemical change because bubbles were produced meaning a gas was produced) 1. Bubbles and fizzing can be seen instantly when baking soda is mixed with vinegar. The bubbles are evidence of what? 2. What characteristics is shared by all chemical reactions? 3.The image shows what happens when cold medicine tablets are placed in room-temperature water. What evidence would indicate that a physical change has taken place? Grab a TEST and a Blank Sheet of Paper!
Get out your Bell Ringer Sheet and Stack up at your table--make sure your name is on it! Get Started on TEST! When you finish--bring it to the front lab table and follow the directions at your table as to what to do with the blank sheet of paper! We will share at the end if we have time! You may listen to your headphones during your test and while decorating your hand and arm! In Thursday's box--write your iPad color and number that you are going to be using and then get started on Step 4--Google Slides! Today is your last day for Step 4!!! Also today is Coach Stokes' last day!
1. A student added white crystals to a clear liquid. The crystals dissolved in the liquid. After a few seconds, the liquid became quite warm and then turned bright red in color. The first indication that a chemical change was taking place could be observed when –
2. A student mixes two clear liquids together. After a few minutes, a white powder can be seen settling on the bottom of the test tube. What conclusion can the student make based on these observations? The two clear liquids – 3. What is your mnemonic device for remembering signs of a chemical change? 1.Students combine several chemicals and record the observations in their science notebooks. A list of the observed results is given here.• Production of a gas (bubbles) • Phase change (solid to liquid) • A precipitate forms • Change in shape • Crystals dissolving • Heat produced How many of the observations are evidence that a new substance was formed? 2. Bubbles and fizzing can be seen instantly when baking soda is mixed with vinegar. The bubbles are evidence of what? 3.The table records the observations that result from four different combinations. Which combination of substances shows evidence that a new substance was formed? 1. What makes a chemical change different from a physical change? 2. A student measures out 100 mL of two different clear liquids and then pours one into the other. The mixture, which has a volume of 200mL, turns bright red, then begins to become quite cold. In this process, the first evidence that a new substance had formed was observed when the – 3. The image shows what happens when cold medicine tablets are placed in room-temperature water. What evidence would indicate that a new substance is produced? 1. Name some physical changes.
2. What evidence shows that a new substance has been created? (chemical change occurred) 3.Four substances were mixed with a clear liquid. The observations are recorded in the following table. Based on the observations, for which mixture is there best evidence that a new substance was formed? |
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December 2018
AuthorMy name is Jennifer Barnes--also known as Coach Barnes--for more info visit the about me page! Categories |