Monday, 21 October 2013

Matter matters?



Class Agenda:



1) Observations & Summary:


Mr. Pro and the class discussed about the observations for each experiments.
Experiment one observations: When you flipped the tube filled with water upside down, the water would stay in the container. No atmosphere would make the water fall down
Experiment two observations: The air from the second tube entered the first tube.
Experiment three observations: Gas and bubbles were produced --> makes chemical reaction. Balloon moved and it inflated
Experiment four observations: Baking soda and vinegar balloon fell faster, proofing that it is heavier
Experiment five observations: Balloon was pushing up on my hand. Water level became bigger.
Experiment six observations: The balloon went inside the jar, then popped.


Summary:  All of the experiments were connected to matter.


Also, Mr. Pro explained to the class of what fluid was.



Mr. Pro did an experiment to show that some things are denser than others. I couldn’t upload the video, but I can make you see it with this link.




2) What’s matter?:


For the rest of the class, Mr. Pro made us do an investigation about matter.


Matter has volume. You can measure it with a measuring cylinder. The units are milliliters.
Matter has mass. You can measure it with a scale. The units are grams.


Symbols:
  • Volume = V
  • Mass = m
  • Milliliters = mL
  • Grams = g


Mr. Pro made us do a investigation on how to find volume, mass and density of objects. These was the procedure:
1) Get the materials:
  • 100mL measuring cylinder
  • 200mL beaker
  • ruler
  • magnet
  • rock (hematite)
  • 3 marbles
  • scale
  • cork


2)  Predict the volume, mass and density of the magnet, the rock, 3 marbles, a knife and the cork after they are put on the cylinder.




3) See the real answer! Put the materials inside the measuring cylinder and compare .


Thanks Jorge for letting me use your information.
After all, what skill did we learn? A skill we learned in class was to measure mass and volume. You can use a Measuring Cylinder to measure volume and a Scale to measure mass. Another skill we learned was how to find density. Mr.Pro said that if we did the mass divided by volume, you would get density.

Overall, the class stayed on task, working on the investigation.


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