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In a solution, the solute and solvent are typically in the same physical state, usually as liquids. For example, when salt (solute) is dissolved in water (solvent), both are in a liquid state. However, a solution can also occur in other states, such as when gases are mixed (e.g., air is a solution of gases). In any case, the components of a solution maintain a uniform composition and phase.
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What makes a solution homogeneous?
A solution is considered homogeneous when its components are uniformly distributed and have the same physical and chemical properties throughout. This results in a single phase with no visible boundaries between the different substances dissolved in the solvent.
Is it true when a physical change that takes new substances are formed?
No, in a physical change, no new substances are formed. The change only affects the physical appearance or state of the matter, such as size, shape, or phase, but the chemical composition remains the same.
What is heterogeneous physical?
Heterogeneous physical refers to a system where the components or substances within it are not uniform or of the same kind. This means that there are different types of materials or substances present within the system, displaying varying physical properties or characteristics.
You have two solid substances that look the same What measurements would you take and which tests would you perform to determine whether they actually are the same?
- chemical analysis of these substances - determination of some physical properties
What is the composition of the materials during physical change?
During a physical change, the composition of the materials remains the same. The change only affects the physical properties of the substance, such as its shape, size, or state of matter, without altering its chemical composition. This means that no new substances are formed during a physical change.
Is ammounium chloride and water a physical or chemical change?
When ammonium chloride(NH4Cl) is dissolved in water the solvation process itself is a physical change, NH4Cl changes from one of its state (crystalline) to solution, where NH4+ and Cl- ions are surrounded by water molecules.
When a small amount of solid ammonium chloride is shaken with water a colourless solution forms what type of change has occurred?
A physical change has occurred, where the ammonium chloride solid has dissolved in water to form a colorless solution. No new substances are formed in this process, so it is still the same compound but now in a different state (solid to solution).
Is urine a compound?
Urine is a liquid waste product composed of water, electrolytes, and waste substances like urea and creatinine. It is not a compound but a complex mixture.
What makes a solution homogeneous?
A solution is considered homogeneous when its components are uniformly distributed and have the same physical and chemical properties throughout. This results in a single phase with no visible boundaries between the different substances dissolved in the solvent.
How is the mixture the same as a solution?
in both, substances mix together
How is a mixture same as a solution?
in both, substances mix together
Does physical state of matter always change during a chemical change?
Not necessarily. Some chemical reactions may change the physical state of matter (e.g. solid to liquid), while others may not involve a change in physical state. It depends on the specific reaction and the properties of the substances involved.
What happens when the concentration of dissolved substances is in the same in both the cell and the solution in which it is placed?
Isotonic solution
Is it true when a physical change that takes new substances are formed?
No, in a physical change, no new substances are formed. The change only affects the physical appearance or state of the matter, such as size, shape, or phase, but the chemical composition remains the same.
How are mixtures and solution same?
Mixtures and solutions are both combinations of two or more substances. In a mixture, the substances are physically combined and can be separated by physical means, while in a solution, one substance (solute) is dissolved in another (solvent) at a molecular level and cannot be easily separated.
Is mixing two cheeses in a bowl a physical or chemical change?
No. The cheese is still cheese, it's just in pieces now.
In a physical change some of the substances in a material change but the properties if the material stay the same?
Yes, in a physical change, the arrangement or state of the particles in a substance can change, but the chemical composition and fundamental properties remain the same. Examples of physical changes include changes in state (solid to liquid), size, shape, or phase transitions.
