Matter,Ecology,Energy,Solar System Flashcards
What are amorphous solids?
They are packed together with an irregular structure.
Where is the asteroid belt located?
Between the orbits of Mars and Jupiter
What are Quantitative observations?
Involve a numerical measurement
What is a solid?
A substance that keeps the same size and shape regardless of the shape container it is.
What is a liquid?
A substance that keeps the same volume but have no fixed shape. They take on the shape of the container they’re placed in.
What are qualitative observations?
Describe in words the result of an investigation.
What is the particle model?
- all substance are made up of particles
- the particles are attracted towards surrounding particles
- the particles are always moving
- the hotter the substance is, the faster they move
Finish the sentence:
‘Particles in solids cannot move freely but they…… .. ….. ………
vibrate in fixed positions.
The density of an object depends on…
How closely together the particles are.
What are crystalline solids?
Solids made up of particles arranged in regular repeated units.
What is a fluid?
A fluid is any substance that flows.
What is diffusion?
Diffusion is the spreading of one substance into another.
What is radiation?
Radiation travels in straight lines and can pass through empty space.
In which state of matter cant diffusion occur and why?
Solids because the particles are not free to move.
A change of state involves…
Heating or cooling of matter
How do you find out the density of an object?
Mass divided by volume.
Define community
A community is a group or association of populations of two or more different species occupying the same geographical area.
What is density?
The measure of how much matter there is in an object compared with how much space it takes up.
What is matter made up of ?
Particles
What is heat?
Heat is a form of energy and flows from a hotter object to a colder one until the temperatures are equal.