13 Questions
What is the role of the meniscus in a knee joint?
To act as a shock absorber and provide stability
Which part of a solution is known as the solvent?
The liquid part that does the dissolving
If a substance has an acidic pH, what is its pH value?
Less than 7
What defines a solution?
Substance dissolves completely in another substance
Which substance is considered a solute in saltwater?
Salt
What happens to small solid particles in a suspension?
They stay suspended or floating around
In a solution, what does the solute refer to?
The substance that gets dissolved in the solvent
How does suspension differ from a solution?
In a suspension, small solid particles do not dissolve completely
What pH range characterizes an acidic substance?
1-6.9
Which substance acts as the main part of a solution that dissolves another substance?
Solvent
What is the function of suspension in a liquid or gas mixture?
Remains suspended and does not dissolve completely
What is meant by an alkaline (basic) pH?
A pH value greater than 7
How does the meniscus present itself in physics and chemistry?
As the curve seen at the surface of a liquid in a container
Study Notes
Meniscus
- The meniscus is a C-shaped cartilage in the knee joint that acts as a shock absorber and helps with stability during movement.
- In physics and chemistry, the meniscus refers to the curve seen at the surface of a liquid when it's in a container.
Solution
- A solution is a mixture where a substance dissolves completely in another substance.
- Example: Salt dissolving in water to make saltwater.
- Solvent: The main part of a solution that does the dissolving, usually the liquid part.
- Solute: The substance that gets dissolved in the solvent.
Suspension
- Suspension is when small solid particles are mixed into a liquid or gas, but they don't dissolve completely.
- Instead, they stay suspended or floating around in the mixture.
- Example: Sand stirred into water.
pH
- pH is a measurement of how acidic or basic a substance is.
- The pH of blood is 7.35-7.45, which is alkaline.
- Acidic pH: A substance with a pH value less than 7.
- Examples: Lemon juice and vinegar.
- Neutral pH: A substance with a pH value of 7, neither acidic nor basic.
- Example: Pure water at room temperature.
Boiling Point of Water
- The boiling point of water is 100 degrees Celsius or 212 degrees Fahrenheit.
Explore the concepts of meniscus in biology, solution in chemistry, and solvent in solutions. Learn about the functions of meniscus in the knee joint and liquid surfaces, as well as the process of dissolving one substance in another.
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