States of Matter
Name the 3 states of matter.
Solid, liquid, and gas
Is melting an ice cube reversible or irreversible?
Reversible
Are the molecules in a solid close together, far apart, or somewhere in between?
Close together
What does it mean for a substance to be soluble?
It can dissolve.
What happens to the temperature when a substance gets frozen?
It gets colder.
What state of matter holds its own shape?
Solids
When you bake a cake, is it reversible or irreversible?
Irreversible.
Are the molecules in a gas close together, far apart, or somewhere in between?
Far apart
What do you get when you mix a solute and solvent?
A solution.
What is the process of a solid turning into a liquid?
Melting
What state of matter takes the shape of its container but keeps the same volume?
Liquids
Give one example of a reversible change.
Variety of answers work.
Are the molecules in a liquid close together, far apart, or somewhere in between?
Somewhere in between
What do you call the substance that gets dissolved in a liquid?
A solute.
What happens to the molecules of a substance when it is heated?
They move faster/ farther apart
What is the process called when a liquid turns into a gas?
Evaporation
Any viable answer works.
Which state of matter are the molecules moving the most?
Gases
What do you call the liquid that dissolves a substance?
A solvent.
What happens to the molecules of a substance when cooled?
They slow down/ get closer together
What is the process called when a gas turns into a liquid?
Condensation
Is milk curdling (getting hot) reversible or irreversible and why?
Irreversible, solid milk can't be turned back.
What is a molecule?
Small unit of a compound.
Name one way you can affect how fast a substance dissolves.
Temperature, stirring, etc.
What temperature does water boil?
100 degrees celsius.