States of Matter
In a solid, how do particles move?
They vibrate in place.
When the line on a heating curve goes up, what is happening to temperature?
It increases.
What type of heat transfer happens when objects touch?
Conduction
An element is made of how many types of atoms?
One type.
If you cut a solid into smaller pieces, what happens to the surface area?
It becomes bigger.
In a liquid, how do particles move?
They slide past each other medium speed and loosely packed.
When the line is flat, what is happening?
The state is changing.
What type of heat transfer happens when warm air rises and cool air sinks?
Convection
A compound is made from how many types of atoms?
Two or more types joined together.
If surface area becomes bigger, does the rate of change become faster or slower?
Faster
In a gas, how are particles arranged?
They are far apart and move fast.
During melting, does the temperature change?
No, it stays the same.
What heat transfer comes from the Sun?
Radiation
What do we call a mix of two or more substances that are NOT joined?
A mixture
If you add more solute to a solution (more particles), what happens to concentration?
It increases.
What is it called when a solid changes to a liquid?
Melting
During boiling, does the temperature change?
No, it stays the same.
Why does a metal spoon feel hot in soup?
Metal moves heat quickly.
Is salt water an element, compound, or mixture?
Mixture (solution).
When concentration is higher, is the rate of change faster or slower?
Faster
What is it called when a liquid changes to a gas?
Boiling
What do we call the temperature where a solid becomes a liquid?
The melting point.
Why does hot air rise?
It is lighter and moves up.
Give one example of an element, one compound, and one mixture.
Element: oxygen; Compound: water; Mixture: air. (Any correct examples OK.)
If temperature increases, what happens to particle movement and the rate of change?
Particles move faster, so the rate is faster.