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What is the dependent variable in salt water experiment

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The results of this experiment confirms the proposed hypothesis and shows the plain water freezes first since it gets to its freezing temperature, while the sugar water and slat water are still getting colder. It also shows that the freezing point of salt water is lower than that of sugar water. One of the constant variables would be the temperature in the room, it stays the same for both tests. The control would be the whole ice cube that is melting. The dependent variable would be the time it takes the ice cube to melt. That variable is dependent on the size of the pieces of ice.

Hypothesis: If soda is added to the water and tablet, then the dissolving rate will be longer because more substances were mixed to the solution/mixture. Identifying Variables Directions: For the following experiments identify the three variables for each experiment, the manipulated variable, the responding variable and the constants. This prediction is your science project hypothesis. When creating your hypothesis keep in mind that it should incorporate the Independent Variable, and all of your Dependent Variables that you found. For example: Our hypothesis is that a nutrient solution will outperform typical potting soil by causing a 30% increase in growth speed. solids in liquids (example: salt water). This experiment will involve a solution formed with a solid solute (a chemical salt) and a liquid solvent (water). If the properties of a solution remain constant, the system of solute and solvent is considered to be at equilibrium. He repeated this experiment 10 times over a 20 day period. He kept the bird feeder in the same place and thoroughly mixed the seeds together. Leticia timed how fast five apple slices turned brown (oxidate) after being dipped in different preservatives such as lemon juice, fruit freshener, salt water, and lime soda. The dependent variable for this experiment was the respiration rate of the goldfish, and the independent variable was the temperature of the water. The null hypothesis is that the water temperature will not affect the respiration rate of the goldfish; this means that despite all our Independent Variable B. Dependent Variable C. Controlled Variables/Constants eScience Labs, LLC 2014 D. Experimental Controls/Control Groups 2. To determine if the type of agar affects bacterial growth, a scientist cultures E. coli on four different types of agar.

This is inquiry-based lab in which students are asked to investigate what happens when you add salt to a water/ice mixture. Dissolving Sugar: Making Solutions The American Chemical Society has developed a set of very useful online lessons about Chemistry, one of which is particularly relevant to the work of this lab. Dec 04, 2009 · Dependent variables rely on the independent variables to change/be affected. For example, if you are doing a salt water and fresh water experiment trying to see which boils faster, the independent...
solids in liquids (example: salt water). This experiment will involve a solution formed with a solid solute (a chemical salt) and a liquid solvent (water). If the properties of a solution remain constant, the system of solute and solvent is considered to be at equilibrium. Carbon Transfer through Snails and Elodea – Virtual Lab LAB NOTEBOOK Hypothesis: Explain how carbon dioxide cycles in aquarium water through snails and Elodea Dependent variable & Operational definition Determine the operational definition of your dependent variable. How will you measure the dependent variable?

Aug 25, 2015 · Basically, water is known as a solvent and salt is known as a non-volatile solute. When you add something like salt to a solvent like water, it makes water become an impure solvent and raises its boiling point above that of pure solvents. Though salt raises the boiling point of water, it doesn’t do it very much. The experimental groups in this experiment are as follows; the independent variable is the water saturated with salt, as well as the water saturated with sugar. The dependent variable is the seeds that are set to germinate with tap water, water saturated with salt, and water saturated with sugar. A dependent variable is what you measure in the experiment and what is affected during the experiment. The dependent variable responds to the independent variable. It is called dependent because it "depends" on the independent variable. In a scientific experiment, you cannot have a dependent variable without an independent variable. Example: You are interested in how stress affects heart rate in humans. Your independent variable would be the stress and the dependent variable would be the ... The Effect Of Salt Solution Concentration On Osmosis 832 Words | 4 Pages. Investigation of the Effect of Salt Solution Concentration on Osmosis in Potato Tissue Background Theory: Osmosis, derived from the Greek; ōsmos, meaning “a push” is defined as a passive process in which there is a net movement of solvent molecules across a semi-permeable membrane, from low solute concentration ...

For example, if you open a faucet (the independent variable), the quantity of water flowing (dependent variable) changes in response--you observe that the water flow increases. The number of dependent variables in an experiment varies, but there is often more than one. Experiments also have controlled variables. Controlled variables are ... Simply put, independent variables are inputs and dependent variables are outputs. For example, a graph showing the amount of time spent studying on a test vs. the average score gives clear examples of each. The independent variable, the time spent studying on a test, is the amount that we can vary. The dependent variable, or the test score, is based on the value of the independent variable.

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Use the data from the summative to plan for future differentiated instruction on scientific thinking and problem solving. This unit is an introductory unit for a year-long theme of scientific thinking and problem solving. Students should be monitored for growth towards the unit objectives through-out the year. Dec 03, 2019 · An experiment is a type of research method in which you manipulate one or more independent variables and measure their effect on one or more dependent variables. Experimental design means creating a set of procedures to test a hypothesis. A good experimental design requires a strong understanding of the system you are studying.

A good basic experimental design has only one independent variable. If there is more than one independent variable changed in the experiment, then it will be difficult to attribute the results observed to your hypothesis. 2. Dependent Variable The dependent variable is the variable that is observed during the experiment. It is Students conduct experiments to determine what environmental factors favor decomposition by soil microbes. They use chunks of carrots for the materials to be decomposed, and their experiments are carried out in plastic bags filled with dirt. Every few days students remove the carrots from the dirt and weigh them. Depending on the experimental conditions, after a few weeks most of the carrots ...

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Specific Heat Capacity of Water Lab Experiment The world climate does not respond immediately to the external forcings applied by human activity. A simple way to show why this is so is to make some simple observations about the heat capacity of water. Osmosis Lab Definition of Osmosis WATER moves from an area of HIGH to LOW concentration. Problem/Purpose What effect will distilled water and salt water have on the mass of a potato slice? Increase in mass – water going in Decrease in mass – water coming out Research Background Knowledge Osmosis is the diffusion of water.

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When a scientist chooses an independent variable (the cause), he/she anticipates a certain response (the effect). This response is known as the dependent variable. The dependent variable should be something that is observable and measurable. Like the independent variable, an experimental inquiry should only have one dependent variable. 4. Measure 25-mL of distilled water in the graduated cylinder and add the water to the beaker with the mixture. Stir thoroughly with the stirring rod to dissolve the salt. 5. Determine the combined mass of a watch glass and a piece of filter paper. Record this mass. ? Label the corner of the filter paper with some identification of your group ...

In this case, the amount of water is the independent variable because that is what you're changing in the experiment: one seed gets a lot of water and the other seed only gets a little water. The dependent variable is the height of the plant , because you predict that the height is going to change DEPENDING on how much water the plant receives.  

experimental variable. By only changing the salt you will be able to learn how it works. Variables in Experiments— Experiments demand control. If more than one variable changes at a time, the cause and effect is unclear. Determine what the experimental variable is in these experiments. How does salt change the freezing temperature of water? Surface tension is one of the most important properties of water. It is the reason that water collects in drops, but it’s also why plant stems can “ drink water ,” and cells can receive water through the smallest blood vessels. You can test multiple surface tension experiments using just a few household items. 1. Identify What is the operational definition of the dependent variable in this experiment? 2. Analyze What effect does the concentration of solutes have on diffusion rates? 3. Analyze In Aquarium C, would the water level on the side with 30% solution of NaCl be higher, lower, or equal to the water level on the side with 5% solution? Explain.

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Students conduct experiments to determine what environmental factors favor decomposition by soil microbes. They use chunks of carrots for the materials to be decomposed, and their experiments are carried out in plastic bags filled with dirt. Every few days students remove the carrots from the dirt and weigh them. Depending on the experimental conditions, after a few weeks most of the carrots ... Independent Variables, Dependent Variables and Constants Directions: Identify the independent variable, dependent variable, constants, and control groups in the following studies. Each question is worth 1 point. Total of 5 pts. 2. Mr. Smith wanted to see if the color of light shined on a plant had an effect on the number of leaves it had. Oct 26, 2018 · A student conducts an experiment to determine how the amount of water given to a plant affects its growth. What is the dependent variable for this experiment? a. the amount of water b. the height of the plant c. the amount of sunlight d. the amount of soil

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Salt is the key here. Water will move from an area of less salt to more salt (more water to less water), and so when the potato is placed in the salt water, all the water that is inside the potato (yes, plants have a lot of water inside of them, that’s what gives a plant it’s structure) moves out by osmosis.
The outcomes resulted in salt water boiling at 330 seconds (average) whereas pure water boiling at 520 seconds (average). The outcomes of this experiment proven my hypothesis correct which was “salt water will boil faster than pure water”. I have controlled my variable by putting the same amount of water in each pot (900mL).

Understanding the definition and different types of variables is vital to properly conducting any science experiment. An independent variable is what you intentionally change in order to measure the effect of the dependent variable.To measure both of these, you must also have controlled variables: factors that remain ... The snow or ice that is covered with the grains of salt immediately melts into water, and the melted ice spreads out from that point. This can be compared to this “What makes ice melt fastest?” experiment, as the exact same process occurred as seen in the pictures above.

The more salt...the lower the freezing point. In the above experiment energy is lost from the water in the form of heat. This heat is used to melt the ice. Since heat is lost from the water the temperature of the water goes down. Since there is now salt dissolved in the water it cannot freeze again, hence we observe a lowers temperature. In this experiment, you'll learn about the colligative properties of water. To do this, we're going to test the melting rate of ice with and without salt. The naked egg experiment is the perfect eggsperiment for a science fair project! Make several naked eggs to perform a science experiment with eggs in different liquids and learn about osmosis. With one egg in corn syrup and other eggs in salt water or seltzer water, kids may be surprised how the naked eggs change!

Both samples will be from the same brand and mixed into the hydrogen peroxide the same way to avoid any mistakes in my experimentation. The independent variable is the amount of dish soap, while the dependent variable is the amount of foam produced. The more salt...the lower the freezing point. In the above experiment energy is lost from the water in the form of heat. This heat is used to melt the ice. Since heat is lost from the water the temperature of the water goes down. Since there is now salt dissolved in the water it cannot freeze again, hence we observe a lowers temperature. Experiment #9: Tap Water Testing The water we use at home is probably one of the most important safety concerns we face. It's unfortunate, that polluted water can look the same as pure water.

•Have a control group/experiment for the story •Add control variables if you can •Make sure you include information so people can identify the independent variable (what they will do/change) and the dependent variable (what they will observe/measure) Understanding the definition and different types of variables is vital to properly conducting any science experiment. An independent variable is what you intentionally change in order to measure the effect of the dependent variable.To measure both of these, you must also have controlled variables: factors that remain ... What is the independent variable?, What is the dependent variable?, This must remain unchanged throughout the experiment to ensure the experiment remains valid. , A scientist investigates the effect of carbon dioxide on plant height. The scientist grows plants in several closed containers.

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Centos mail serverBoth samples will be from the same brand and mixed into the hydrogen peroxide the same way to avoid any mistakes in my experimentation. The independent variable is the amount of dish soap, while the dependent variable is the amount of foam produced. Can the children think how to separate a mixture of salt and sand? If you do this at the end of a unit of work on separating materials then they certainly should be able to figure out that if you add the salt/sand mix to water then the salt will dissolve in the water. Temperature-Dependent Solubility Transition of Na2SO4 in Water and the Effect of NaCl Therein: Solution Structures and Salt Water Dynamics

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Sep 03, 2011 · The experiment requires putting a piece (or more) of potatoes into glucose or salt solution to see the result of osmosis (a hypertonic type of solution is mostly used as it would give the most prominent visual prove of osmosis, as was mentioned in an observation of an experiment). In this experiment, the independent variable is the chemical compound being tested while the dependent variable is the temperature of the water. The constants are the surface being tested on which is a stove, the amount of water being used, the amount of grams used for the sodium…

For example, if you open a faucet (the independent variable), the quantity of water flowing (dependent variable) changes in response--you observe that the water flow increases. The number of dependent variables in an experiment varies, but there is often more than one. Experiments also have controlled variables. Controlled variables are ... Which type of Water is the hardest (salt water, distilled water, mineral water)? Hypothesis I believe that is soap is mixed with each type of water then,salt water will increase the amount of suds because it has all Those minerals which will increase the amount of suds. variables Independent variable(s) The type of water. Dependent variable(s)

Experiment 1: Affect of Light Color on the Rate of Photosynthesis Settings: Light Level = 6.0, CO2 = 6.0, Speed = x1, Color of Bulb = Adjust the colors to complete the table. Do three trials for each color and find the average number of bubbles. For example, if you open a faucet (the independent variable), the quantity of water flowing (dependent variable) changes in response--you observe that the water flow increases. The number of dependent variables in an experiment varies, but there is often more than one. Experiments also have controlled variables. Controlled variables are ... The variables that are kept the same throughout the experiment. ... What is the Dependent Variable? • Color of the M&M, amount of liquid ... Does salt water freeze ...

The results of this experiment confirms the proposed hypothesis and shows the plain water freezes first since it gets to its freezing temperature, while the sugar water and slat water are still getting colder. It also shows that the freezing point of salt water is lower than that of sugar water. experiment provides a fair test and requires controlled variables, manipulated variables and dependent variables. Making clear all these variables ensures that an experiment will provided us with a fair test of the chemicals involved: in today’s case, it will be a fair test of how much water, vinegar and