solid particle arrangement
particles are tightly packed
particles do not move around
liquid particle arrangement
particles are close together
particles vibrate, move, and slide past each other
gas particle arrangement
particles are very separated
particle vibrate and move quickly
matter
anything that takes up space and has mass
chemistry
study of the properties of matter and how matter changes
condensation
change of state from gas to liquid
sublimation
change of state from solid to gas
deposition
change of state from gas to solid
evaporation
change of state from liquid to gas
freezing
change of state from liquid to solid
melting
change of state from solid to liquid
mass
the amount of matter in an object
volume
amount of space an object takes up
weight
measure of the force of gravity on an object
physical properties of matter
how matter is described according to physical characteristics; characteristics that can be observed without changing the substance into something else; characteristics of matter that are observable or quantifiable
physical properties examples
brittleness, color, malleability, temperature, solubility (dissolving), magnetic, flexibility, density, boiling point, ductility, heat conductivity, length, mass, state of matter, viscosity, electrical conductivity, luster, melting point, texture, volume
physical change
change in a substance that does not change its identity
chemical properties of matter
characteristics that can be observed when a substance interacts with another substance; ability to react; inability to react; usually hidden
chemical properties examples
flammability, burning, oxidation (react with oxygen), hydrolysis (react with water), reactivity with acid, toxicity, heat conductivity, pH level, chemical stability
chemical change
change that occurs when one or more substances change into entirely new substances with different properties.
phase change
a change from one state (solid or liquid or gas) to another without a change in chemical composition
particles
extremely small units of matter (general term)
viscosity
liquid's resistance to flowing
surface tension
measure of how difficult it is to stretch or break the surface of a liquid
amorphous solid
solid made up of particles that are not arranged in a regular pattern
crystalline solid
solid that is made up of crystals in which particles are arranged in a regular, repeating pattern
thermal energy
total energy of motion in the particles of a substance (heat energy)
density
mass per unit volume (D=M/V) (The amount of matter in a given volume)
chemical properties are observed…
by performing a chemical reaction
physical properties are observed…
without changing the composition of the matter