Properties of matter Flashcards
Chemistry
the study of matter
Matter
Anything that takes up space and has mass
What are some things that are not matter
Sunlight, electricity, heat
What is a physical property
Property that can be observed without changing the identity of the substance.
Viscosity
Substance resistance to flow.
conductivity
Materials ability to allow heat to flow
malleability
a substance that can be hammered into a thin sheet
What phases change at melting point
solid to liquid
What phases change at boiling point
liquid to gas
what is density
ratio of mass to volume
what is Physical change
a Change in appearance without changing the composition of material.
What are some examples of physical change
Reversible/irreversible
Changes in size or shape
dissolves
changes phase
Chemical properties
Ability to produce a change in the composition of matter.
What are some examples of chemical properties.
Flammability, reactivity(rusting/corrosion), Precipitate, (Forms a solid)
chemical change
occurs when a substance reacts and forms one or more new substances.
If something dissolves is it a Physical property or a chemical property
Physical
If something reacts is it a Physical property or a chemical property
chemical
If something combusts is it a Physical property or a chemical property
chemical
If something tarnishes is it a Physical change or a chemical change
chemical
If something rusts is it a Physical change or a chemical change
chemical
If something evaporates is it a Physical change or a chemical change
Physical
If something cooks is it a Physical change or a chemical change
chemical
If something grows is it a Physical change or a chemical change
chemical
A spontaneous reaction occurs…
without any outside influence
if variable x is directly proportional to variable y it means…
as y increases x increases
What is an aqueous solution
a solution that dissolves in water
Chemical change release
light/heat
chemical change absorb
photosynthesis/cooking
exothermic
out heat (hot hands)
endothermic
in heat (cold pack)
