Marble Chips Experiment
Pilot
Aim: To investigate how the concentration of hydrochloric acid affect
the speed of reaction with marble chips.
Prediction: I predict that the more hydrochloric acid there is the
faster the chemical reaction. I also predict that the more dilute the
acid is (the more water there is with the acid) the slower the
chemical reaction.
Hypothesis: I predicted what I did because the more concentrated the
hydrochloric acid is the more energy there will be and so therefore
the more collisions there will be. More collisions occur when there
are more acid particles. It is the acid particles that create the
collisions and it is the collisions that lead to the reaction. In a
dilute acid or a mixture of more water than acid, there will be a
slower reaction because there are less acid particles. When there are
few acid atoms, there is less of a chance that a collision will occur
between the acid and marble chips particles.
Independent Variable: I will be changing the amount of mixture
containing the three molar hydrochloric acid and water. This is to
see how much the concentration of acid affects the speed of reaction
to the marble chips. I will have 30 ml of mixture and split it in to
three to get three results to gain an average. The concentrations
will be in the ratios of 30 acid:0 water, 25 acid:5 water, 20 acid:10
water, 15 acid:15 water and finally 10 acid : 20 water. This is an
appropriate range of results as there is not a huge gap between them.
From these ranges, it will be easy to view trends and patterns and
anomalous results.
Dependent Variable: I will be measuring the rate of reaction. I will
measure the rate by timing how long it takes for the water in the
measuring cylinder, to reach a certain point/mark on the cylinder. In
this case I will time how long it takes for the water to reach the ’50
1.Mass out desired amount of baking soda. Each subsequent trial will use one gram more.
this is the best volume to use as it is about ¾ of a test tube full,
Mix 50ml of WATER with 15ml (1 tbsp) of SALT in one beaker or cup
Also, the equations for Potential energy and Kinetic energy are stated to get the Total Energy. They are respectively:
Blot up spills immediately using a soft, clean cloth. Avoid rubbing the cloth around as this actually pushes the substance into the marble as well as spreading it in a wider area. Dab, instead, changing cloths as necessary until all of it is gone.
Lau, Madison 09.10.17 PD : 07 Cockett Science Introduction : The purpose of this lab was to see if a marble dropped from different distances would affect the width of the crater it makes in the sand. This experiment is important to the related science content because it shows how different impacts from an object can affect things when dropped, such as how big or small a crater is. According to the article, “Why do some meteorites create such huge craters?” , Gemma Lavender explained that a meteorite would not have to be large in order to have a big impact on the ground.
from the work surface, if any. Our results are set out below. Time (mins) : 0 - Height from bench (cm) -.. Temperature reached (d. c.). Water Volume (cm cubed).
was cut up into the smaller cubes, all 8000 of them. From there, I had
You’ll want to swish for a full 20 minutes, but you may find you’ll need to start with about 10 minutes and gradually move up to the 20 minute mark.
Repeat step 4 after another minute continue this for 5 minutes Beaker Start 1 2 3 4 5 Temperature change 1 59°c 57°c 56°c 55°c 52°c 50°c -9°c 2 72°c 71°c 66 °c 63°c 60°c 57°c -15°c 3 86°c 71°c 64°c 58°c 56°c 52°c -34° c 4 72°c 68°c 65°c 60°c 57°c 53°c -19°c Main Investigation ------------------ Aim To find out weather a beaker with a larger surface area cools quicker than one with a smaller surface area. Fair test To make it a fair test we will keep the following the same: Colour of tin - we will use clear beakers Amount of water - we will use 100ml
water has had equal amounts of time for it to heat up, again I will
To improve the method, I would have used a machine to cut the chips to
In the story marble champ there is a girl who name is Lupe Medrano.She taught me a life lesson and also the theme of the story.She taught me to believe in what you put your time in like in her lots of time she spent practicing marbles.She also taught me to listen to what’s around you and let that give you the belief in yourself.My theme in the story is always belief in yourself.
An investigation into how changing one variable influences the rate of reaction between marble chips and dilute Hydrochloric acid
In the story the marble champ by gary soto the character. Lupe learns that practice makes perfect. Charter learns this through doubt, practice and determination.