Category Archives: Science 10

Science Analogy

Temperature is like riding down the hill with a bike. The steeper the hill is, the bike goes as a faster rate. Which means theres more collision.

Concetration is like a bike gaining more speed as the steep becomes steeper. Providing more speed to the bike to collide.

Surface area is like a bike being so big that it is more likely to collide with objects.

catalyst is like a bike going down a hill and its going fast, the hill becomes higher and slows the bike down.

Testing for Acids and Bases Lab

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In the lab we tested Acids and bases and how some solutions react to one another. The goal of the lab was to discover the properties of acids and bases, to develop methods for identifying acids and bases, and to classify unknown solutions as acids or bases. Each person in the group received a tray and we had red and blue litmus paper. in the columns of each tray we put in 1-2 drops of phenolphtalein, bromthymol blue,  and methyl orange. My group put the litmus paper in the big empty space on the tray. We then proceeded to put HCl, NaOH, pH 7, vinegar, laxative, lemon, juice, cola, alka-seltzer, aspirin, over cleaner, liquid plumber, ammonia, unknown D, E and F. If the colours changed then we put down the color it changed to. I was interested in how the colors changed because I dont know a lot of chemistry. I then  looked at the pH indicators and classified each and everyone of the solutions as acids, basic or neutral. I discovered the properties of acids and bases. I saw that some acids react weirdly with bases. Chemisty is used in the real world everyday. We cook, clean, and drink solutions everyday and it is nice to know how each chemical reacts with another.

Walk on the Wild Side – Lab

IMG_1572IMG_1576 IMG_1577 image image imageIn the lab we collected data and then plotted the data we collected. We asked ourselves how we can represent motion in different directions on a position-time graph. We picked crab walk to use for the lab. After we picked our groups we chose a starting point in school and put a piece of tape on it. Then a group member went on the starting point and started crab walking. After 5 seconds we stopped and measured and put the data in the graph. We repeated this procedure until 30 seconds with 5-second intervals. We chose new members for trials 2 and 3. We repeated the steps for all the trials. Then we plotted the data on the graph provided. The x axis was the independent variable which is the time and y-axis was the dependent variable which was the position. I noticed on the graph that in trials 1 and 2 the displacement were different because the directions was positive and negative and also the group member cannot move the same amount of space everytime for multiple reasons. Each group member had different heights, speed, and hand sizes which varied the times on our data. I found that the lab was not very accurate. I also learned that the slope represented the speed since distance over time is speed. We use time intervals in everyday life since we use cars. When the manufaturers test their new cars they see how fast the car can go in a certain amount of time. Distance speed and time are the 3 important factors to a car. The manufacturers also see how far a car can go with certain amount of gas at a certain amount of time and speed. This lab demonstrates the use of speed time and distance and helps us to graph position time graphs.