Dissolving Flashcards
What happens to sugar when you place a lump of it in water?
The sugar gradually dissolves, leaving a colorless solution.
What is the process called when a substance disappears in a liquid?
Dissolving
What is a solute?
A solute is the substance that dissolves in a solvent.
What is a solvent?
A solvent is the substance that the solute dissolves into.
What is a solution?
A solution is a mixture of a solute and a solvent.
What happens to the sugar in water even though it seems to disappear?
The sugar particles spread out among the water particles, remaining present but no longer visible.
Why is a sugar crystal visible before it dissolves?
It is made of tightly packed groups of vibrating particles.
What role do water particles play in dissolving sugar?
Water particles vibrate and slide past one another, bumping into sugar particles, which helps separate and disperse the sugar particles.
What happens to the sugar particles after they have dissolved in water?
The water particles separate all the sugar particles, which are then too small to be seen.
What happens to the sugar particles when the sugar cube dissolves?
- The sugar crystal is visible because it is made of tightly packed groups of vibrating particles.
- As water particles vibrate and slide past each other, they bump into the sugar particles, helping to separate them.
- Eventually, the water particles fully separate all the sugar particles, which become too small to be seen.
What does it mean if a solution is transparent?
It means you can see through it. However, transparent does not necessarily mean colorless.
Can a solution be colored and still be transparent?
Yes, for example, a copper sulfate solution is blue but still transparent.
How can you tell that milk is not a solution?
Milk is not transparent; it is opaque, which indicates it is not a solution.
What is the difference between dissolving and melting?
Dissolving requires two substances (a solute and a solvent), while melting involves only one substance changing from a solid to a liquid due to heat.
What are some examples of dissolving?
- Sugar (solute) in black tea (solvent)
- Instant coffee (solute) in hot water (solvent)
- Nail polish (solute) in nail polish remover (solvent)
