Particle nature of matter+a little changes of state Flashcards
What is matter
Any substance that has mass and takes up space by having volume
What is room temperature
25 degrees
What is atomos
Greek for indivisible
What is matter
Stuff that takes up space and has mass
What is mass
The amount of matter in something
What, when, where and who suggested what matter was made of?
Democritus (2000 years ago in Greece) suggested that matter was made up of tiny particles too small to be seen
What did Democritus think
That if you kept cutting a substance smaller and smaller you would get to the smallest possible particles, the building blocks of matter.
What are the 4 main ideas in the particle model?
- All matter is made up of tiny particles
- The particles of matter are always moving
- The particles have spaces between them
- Adding heat to the particles makes them move faster
What are the 3 particles matter is made up of
Atoms
Molecules
Ions
What are atoms
The smallest part of matter(an element)
What are molecules
Two or more atoms bonded together
What are ions
Positive or negatively charged particles
What do particles do to each other
They exert forces of attraction/repulsion on each other.
True/false particles are always in motion
True
But its invisible to the human eye
What do particles have
Kinetic energy
How do a solids particle move
They vibrate in place might be in a lattice structure
How a liquids particles move?
They flow freely over each other and take the shape of the bottom of the container
What are sub-atomic particles
Protons,neutrons,electrons
Quarks
How do a gases particles move
They are far apart and move through space, they take the shape and fill the volume of the entire container.
What is the structure of the particles in a solid called
Crystal Lattice structure
Which states of matter can be compressed
Gas
What happens when you add heat to a substance
The molecules move faster and the spaces between the particles increase
When will the states of matter
Expand
Contract
When
Heated
Cooled
What is it called when a state of matter changes to another
Phase changes/ changes of state
What are the densities of a
Solid
Liquid
Gas
High density, particles close
Fairly high
Low densit
