Let’s see how much you’ve picked up with these experiments and the reading – answer as best as you can. (No peeking at the answers until you’re done!) Just relax and see what jumps to mind when you read the question. You can also print these out and jot down your answers in your science notebook.
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Click here to download the K-8 Exercises & Answers in PDF format.
About Atoms:
1. What is the smallest stable building block of matter?
2. When you go swimming, what are you moving through?
3. What are three particles inside an atom?
4. What makes one atom different from another?
5. What is an element?
6. Where have almost all atoms come from?
7. What five elements are in all living things?
8. True or false: Matter is made of hard, tightly packed, little particles.
9. What do you call a bunch of atoms stuck together?
About Electrons:
1. How do electrons move?
2. Do electrons just go all over the place in an atom?
3. What is a shell?
4. How many shells can an atom have?
5. What determines how many shells an atom has?
6. How many electrons can be in the third shell of an atom?
7. How many shells does a Sodium atom have? Sodium has 11 electrons.
8. Why do atoms come together to form molecules?
About Density:
1. What is density?
2. Which is more dense, a one pound can of beans or a one pound loaf of bread?
3. Which is more dense a gallon of water that weighs 8 lbs or a gallon of gasoline that weighs 6 lbs?
4. Which is more dense, a school bus filled with children or an empty school bus?
For Advanced Students:
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Click here to download the K-12 Exercises & Answers in PDF format.
As always, if math isn’t your thing, feel free to skip this. Density = mass divided by volume or d=m/v.
1. What is the density of an egg that has a mass of 51 g and has a volume of 50 ml?
2. What is the density of an apple that has a mass of 170 g and has a volume of 160 ml?
3. Can you use the technique used in Experiment 2 to find the density of a “D” cell battery? Follow steps 6 through 9 but put the battery directly into the container without putting it into the cup. This will give you the volume of the battery . When you’re done check out my answer below.
4. Which is more dense ketchup or water? Use these measurements for your calculations. Ketchup: 650ml and 680 g Water: 500 ml and 500 g
5. Of the water, apple, battery and egg, which one had the greatest density? Which one had the least?
Need answers?
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