Table of Contents
- 1 What is the effect of salt on the boiling temperature of water variables?
- 2 What kind of variable is the amount of salt in the water?
- 3 Is salt a dependent variable?
- 4 Why does salt make water boil at a higher temperature?
- 5 What is the dependent variable between salt and water?
- 6 Which is the independent variable of the temperature of water?
- 7 What happens to the freezing point of water when you add salt?
What is the effect of salt on the boiling temperature of water variables?
If you add salt to water, you raise the water’s boiling point, or the temperature at which it will boil. The temperature needed to boil will increase about 0.5 C for every 58 grams of dissolved salt per kilogram of water. This is an example of boiling point elevation, and it is not exclusive to water.
How does salt affect the time it takes for water to boil?
In fact, adding salt does the very opposite of making water boil faster. Instead, it makes it take longer for the water to boil! The salt water requires more exposure to the heat in order to boil than water alone, so the boiling point is elevated and the time it takes to get the water to boil increases.
What kind of variable is the amount of salt in the water?
Worked Examples of Variables in Chemistry Experiments
| Aim of the experiment | Independent Variable | Dependent Variable |
|---|---|---|
| To determine the effect of the type of salt on water solubility. | Type of salt | Amount of salt |
| To determine the effect of water volume on the solubility of sodium chloride. | Volume of water | Amount of sodium chloride |
What is the controlled variable for boiling water?
Dependent variable (also known as responding variable) is the boiling point of water. Controlled variables are the air temperature and pressure.
Is salt a dependent variable?
Independent variables include type of salt (i.e. rock salt, table salt) and amount of salt (i.e. no salt, 1/2 tsp., 1 tsp., 1 tbls.). Time (in seconds) for ice to melt was used as the dependent variable.
What is the controlled variable in salt water experiment?
The independent variable (the one that we set; also known as manipulated variable) is the amount of salt in water. The dependent variable (also known as responding variable) is the status of the egg in water (sink, submerge, float). The control variable is water temperature.
Why does salt make water boil at a higher temperature?
When salt is added, it makes it harder for the water molecules to escape from the pot and enter the gas phase, which happens when water boils, Giddings said. This gives salt water a higher boiling point, she said.
What is dependent variable and independent variable in chemistry?
Independent vs Dependent Variables An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.
What is the dependent variable between salt and water?
VARIABLES: The independent variable is the different amounts salt that will be added to the water (what is done by the scientist). The dependent variable is the boiling temperature of the water (what is being measured).
Which is an independent variable when adding salt to water?
The quantity of salt added to water is under your control and it will change the boiling point of water,i,e. the temperature of water. So quantity of salt is an independent variable while the temperature of water is dependent variable, when other factors are kept constant. Home Science Math and Arithmetic History
Which is the independent variable of the temperature of water?
VARIABLES: The independent variable is the different amounts salt that will be added to the water (what is done by the scientist). The dependent variable is the boiling temperature of the water (what is being measured).
Why does salt dissolve faster in hot water?
The faster the water molecules move around, the faster and easier that they can surround the salt molecules, thus causing the salt to dissolve in the water. So that is why salt dissolves faster in hot water versus cold water. Start your 48-hour free trial and unlock all the summaries, Q&A, and analyses you need to get better grades now.
What happens to the freezing point of water when you add salt?
If you add either sugar or salt to water it will affect the freezing point of the water and will therefor take longer to freeze. The aim of the project is to prove whether or not adding sugar and salt to water will affect the freezing point of the water and will therefor take longer to freeze.
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