Science Quiz 4 Flashcards
All matter is made up of extremely small particles called
Atoms
Atoms combine to form what
Molecules
What provides the basis for scientific understanding of all matter
Atomic theory of matter
Who’s idea was the atomic theory of matter
John dalton
What is the kinetic theory of matter
And who developed it
1) all molecules of matter are in constant motion
2) the warmer an object is the faster its molecules move
James Clark maxwell
Ludwig Boltzmann
The faster atoms or molecules are moving the less the are affected by what
Cohesion
The molecules of what move faster than a liquid
Solid
The molecules of a what are able to move freely but rename close to eachother
Liquid
The random motion of microscopic particle
Brownian motion
The process of mixing molecules of one substance with another substance by random molecular motion
Diffusion
Allows some substance to diffuse through them
Semipermeable
One way diffusion through a semipermeable membrane is
Osmosis
Solids that have well defined melting points
Crystalline
Do not have specific melting points, but instead soften over a range of temperatures
Amorphous
A change in shape when a force moves its normally stationary molecules
Deformation
The ability of a solid to regain its original shape after being deformed
Elasticity
How far a material can be deformed from its original shape
Resilience
How strongly a material deposed deformation
Rigidity
The maximum amount of permanent deformation a material can handle before breaking
Plasticity
The resistance of a material to certain types of small deformations
Hardness
Ranks minerals in the order of their ability to be scratched
Mohs scale
Measures how easily a scale is dented by hardness
Brunel hardness scale
The molecules in an object are being pulled apart
Stretching
Hooks law
F= kx
The opposite of stretching
Compression
A combination of stretching and compression
Bending
When two forces on opposite directions are side by side
Shear
This can be thought of as shear in a circle
Torsion
Attraction to molecules of a different substance
Adhesion
Depends on the strength of the cohesion i. A liquid
Surface tension
What occurred when the adhesion of Water to glass is stronger then a the cohesion between molecules
Meniscus
The phenomenon in which liquids in thin tubes rose above or fall beneath their own levels
Capillarity
The force exerted per unit of area
Pressure= force/ area
P=F/A
Equip to one newton per square meter
Pastel (Pa)
