Quarter 1 Flashcards
What are pure substances?
A substance that has the same atoms of molecules
What do the molecules look like in all states of matter?
Solids: Packed molecules
Liquids: Rolling over each other
Gas: Everywhere
If you heat molecules what happens?
The molecules move faster
If you cool molecules what happens?
The molecules slow down
What are the two things that make up a solution?
Solute & Solvent
Give at least two examples of a solute & a solvent.
Solute: Cocoa and kool-aid powder
Solvent: Water
What is a wave?
A disturbance that transfers energy from one place another.
What is a longitudinal wave?
A wave that is parallel to the disturbance
How are waves made?
By creating a disturbance
Give 2 examples of longitudinal waves.
Sound Waves & The coils on a spring (Slinky)
What is a transverse wave?
A wave that is perpendicular to the disturbance.
Give 2 examples of a transverse wave.
Snapping a rope & Electromagnetic Waves
What is the formula for density?
Mass ÷ Volume
What is density?
How packed together molecules are
When talking about waves, what is frequency?
The number of waves that pass a point in a certain amount of time.
