A hypothesis is a possible explanation for a set of observations or an answer to a scientific question. A hypothesis must be testable and measurable.

Scientific theory: a well-tested concept that explains a wide range of observations.

Theory basics The University of California, Berkley, defines a theory as “a broad, natural explanation for a wide range of phenomena. Any scientific theory must be based on a careful and rational examination of the facts. Facts and theories are two different things.

For a hypothesis to be termed a scientific hypothesis, it has to be something that can be supported or refuted through carefully crafted experimentation or observation.

A scientific theory is a well-tested explanation for a wide range of observations or experimental results. A hypothesis is a possible answer to a question.

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.

There are three main variables: independent variable, dependent variable and controlled variables.

What is a control variable? 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.

Time is a common independent variable, as it will not be affeced by any dependent environemental inputs. Time can be treated as a controllable constant against which changes in a system can be measured.

Examples of Controlled Variables Temperature is a common type of controlled variable. If a temperature is held constant during an experiment, it is controlled. Other examples of controlled variables could be an amount of light, using the same type of glassware, constant humidity, or duration of an experiment.

Essentially, a control variable is what is kept the same throughout the experiment, and it is not of primary concern in the experimental outcome. Any change in a control variable in an experiment would invalidate the correlation of dependent variables (DV) to the independent variable (IV), thus skewing the results.

Answer: Yes heating water allows it to dissolve more Sugars because the molecular distance increases and this distance can be covered by more sugar. In the given question, The independent variable would be the temperature of water.

The independent variable, the variable that the student will change is the amount of water (small amount or large amount). The dependent variable, the variable the student will observe, is the amount of salt dissolved.

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).

The weak bonds that form between the solute and the solvent compensate for the energy needed to disrupt the structure of both the pure solute and the solvent. In the case of sugar and water, this process works so well that up to 1800 grams of sucrose can dissolve in a liter of water.

When sugar is poured into milk, it simply settles down and dissolves gradually. However if we just pour milk from one glass to another, it creates a lot of turbulent flow. This turbulence helps in the sugar getting dissolved somewhat faster.

In the end, after calculating back up to size, it was found to be possible to dissolve at least 880 spoons of sugar in a pint sized cup of tea.

physical change

Dissolving sugar in water is an example of a physical change. Here’s why: A chemical change produces new chemical products. In order for sugar in water to be a chemical change, something new would need to result. If you evaporate the water from a sugar-water solution, you’re left with sugar.

Sugar gets disappeared once added to water. This is because sugar is a substance that is soluble in water. We know that soluble substances disappear in water after getting dissolved completely. Hence the sugar disappears.

When sugar is dissolved in water, its crystals break-off to give tiny particles. The sugar particles go into the spaces between the particles of water and mix with them to form sugar solution. the matter consisting of sugar and water is made up of small particles.

Sugar dissolves faster in hot water than it does in cold water because hot water has more energy than cold water. When water is heated, the molecules gain energy and, thus, move faster. As they move faster, they come into contact with the sugar more often, causing it to dissolve faster.

A mixture in which a substance has fully dissolved in water is called a solution and the substance is said to be soluble. An example of this type of mixture is sugar in water. Here the sugar dissolves fully to give a clear solution. In this example, sugar is the solute and water is the solvent.

Substances that do not dissolve in water are called insoluble substances.

K+ is the the potassium ion while Cl- is the the negative chloride ion this is the produced as the result of the the dissolution of the KCl in the water. The structure of the KCl is the the crystal lattice structure or in the this lattice, each potassium ion is the surrounded by six chloride ions.

When the attraction between water molecules and sucrose molecules overcomes the attraction the sucrose molecules have to other sucrose molecules, they will separate from one another and dissolve.