What are the variables in melting ice?
The independent variables the size of the pieces of ice. The constant variable is the temperature of the room. The dependent variable is the time it takes the ice to melt. The control is the whole ice cube.
What melts ice the fastest independent variable?
The substance that makes ice melt the fastest is salt. For 20 minutes on 3 ice cubes, the average amount of water was 21.16 mL. That means out of 33 mL in 3 ice cubes, salt melted 21.16 mL of that.
What variables can affect the rate at which an ice cube melts?
The time it takes to melt the ice depends on how quickly you can add heat. The best way to determine this time is to measure it yourself. Two big things that affect how quickly you can add heat are the surrounding temperature, and the surface area of the ice.
What are the factors that affect how quickly ice melts?
make ice melt FAST. Increase temperature (sun, fire, hot water, etc), pressure, decrease size, increase surface area, change chemistry/composition (salt), etc.
What are control variables?
A control variable is any variable that's held constant in a research study. It's not a variable of interest in the study, but it's controlled because it could influence the outcomes.
What makes ice melt faster conclusion?
Conclusions: Salt lowers the freezing/melting point of water/ice. When the salty ice cube was placed in the sun, the lower freezing point combined with continuous heat from the sun made the ice melt much faster.
What is an independent variable in an experiment?
Question: What's an independent variable? Answer: An independent variable is exactly what it sounds like. It is a variable that stands alone and isn't changed by the other variables you are trying to measure. For example, someone's age might be an independent variable.
What makes ice melt the fastest conclusion?
Conclusions: Salt lowers the freezing/melting point of water/ice. When the salty ice cube was placed in the sun, the lower freezing point combined with continuous heat from the sun made the ice melt much faster.
What factors affect melting?
Factors affecting melting point
- Ionic Bonds.
- Intermolecular Forces.
- Shape of Molecules.
- Size of Molecule.
What affects how ice melts?
Water that is under the ice and that has a temperature above the freezing point causes the bottom surface of the ice to melt. Warm surface waters cause the edges of the ice to melt, particularly in leads and polynyas.
What factors affect the process of melting?
Many different factors affect the melting point of any substance, such as the force of attraction, impurities present in the substance, and the molecules' size and structure.
What is a control variable example?
Examples of Controlled Variables Temperature is a much common type of controlled variable. Because if the temperature is held constant during an experiment, it is controlled. Some other examples of controlled variables could be the amount of light or constant humidity or duration of an experiment etc.
What is a variable with example?
A variable is any characteristics, number, or quantity that can be measured or counted. A variable may also be called a data item. Age, sex, business income and expenses, country of birth, capital expenditure, class grades, eye colour and vehicle type are examples of variables.
What substance makes ice melt slower?
General insulation of the ice causes it to melt slower. Wrapping it in wool, Styrofoam or wood contains the cold air emitting from the ice, keeping the temperature of the ice low. Putting the ice in a vacuum, such as a vacuum-insulated Thermos bottle, also prevents the ice from melting quickly.
How do you melt ice easily?
In a bucket, combine a half-gallon of hot water, about six drops of dish soap, and 1/4 cup of rubbing alcohol. Once you pour the mixture onto your sidewalk or driveway, the snow and ice will begin to bubble up and melt. Just keep a shovel handy to scrape away any leftover pieces of ice.
Which is the dependent variable?
A dependent variable is the variable that changes as a result of the independent variable manipulation. It's the outcome you're interested in measuring, and it “depends” on your independent variable. In statistics, dependent variables are also called: Response variables (they respond to a change in another variable)
Is temperature a dependent variable?
Think of if you were looking at how temperature changed with the time of day. It's hotter in the middle of the day than at either morning or night. So, the temperature depends on the time. So, the temperature is dependent, and the time is independent.
What material makes ice melt the fastest?
Calcium Chloride Its ability to impose freezing point depression makes it an ideal material because it can accelerate the ice-melting process. The Peters Chemical Company says calcium chloride is its fastest ice-melting material.
What surfaces make ice melt the fastest?
Metal is a better conductor than plastic, so energy is transferred more quickly through the metal. This is why we saw the ice on the metal block melt more quickly.
What causes melting point to increase?
As heat is applied to a solid, its temperature will increase until the melting point is reached. More heat then will convert the solid into a liquid with no temperature change. When all the solid has melted, additional heat will raise the temperature of the liquid.
Which of the following factors help in increasing the melting process of a substance?
Force of Attraction In organic compounds, the presence of polarity, especially hydrogen bonding, usually leads to a higher melting point.
Which factor is generally responsible for high melting points?
The presence of polar and especially hydrogen-bonding groups on organic compounds generally leads to higher melting points. Molecular shape, and the ability of a molecule to pack tightly into a crystal lattice, has a very large effect on melting points.
What are some examples of independent and dependent variables?
The type of soda – diet or regular – is the independent variable. The level of blood sugar that you measure is the dependent variable – it changes depending on the type of soda.
How do you find variables?
2:128:5601 – What is a Variable? (Part 1) Learn How to Use Variables in Algebra.YouTube
What are the 3 types of variables?
A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, and controlled. The independent variable is the one that is changed by the scientist.
What keeps ice from melting the longest?
Line the cooler or bucket with aluminum foil. The reflective surface of aluminum foil is scientifically proven to keep ice from melting longer than other materials.
What slows ice melting?
Results: The larger the surface area of the ice cube the more heat it absorbs, so the spherical ice cube will melt the slowest if it has the least surface area.
Why does salt make ice melt faster?
Because salt particles make it harder for water particles to freeze back onto the ice, the ice that is in contact with dissolved salt melts faster. When the saltwater flows over the surface it melts the ice on its way, creating channels, like rivers, over the surface of the ice ball.
Which is the independent variable?
Answer: An independent variable is exactly what it sounds like. It is a variable that stands alone and isn't changed by the other variables you are trying to measure. For example, someone's age might be an independent variable.
What variable is temperature?
continuous variable Temperature is continuous variable as it does have fractional value too. For example: Today's temperature is 30. 5 degree Celsius, here 30. 5 is not a discrete variable and hence is a continuous variable.