unit 3 - matter Flashcards
Atom:
smallest particle of an element that contains all the
properties of that element (neutral charge)
Element:
a substance containing all the same atoms (Cu)
Compound:
a pure substance made of two or more types of
atoms (chemically combined)
Molecule:
a cluster 2 or more atoms held strongly together
by electrical forces (covalent) (CO2)
Ion:
a charged atom (+ or -)
Particle:
general term referring to small amounts of a
substance
Matter
anything that has mass AND volume
What is NOT Matter
Dark Stuff!
Theoretically, 95% of the universe is made of Dark
Matter and Dark Energy
Properties Used to Describe
Matter
- Physical properties
- Chemical properties
Described using Quantitative
and Qualitative observations
Physical Properties
-measurable using physical senses
-Properties that can be found without
creating a new substance.
ex.
Mass, Density, Melting/boiling point, Colour, Magnetism, Texture
(PP) Extensive Properties
- depend on the amount
- Mass, volume
- Not used to identify substances
(PP) Intensive Properties
depend on the nature of the substance, regardless of amount
(PP) State: (extensive property)
Whether something is a solid, liquid or gas
(PP) Melting point: (extensive property)
The temperature at which a substance changes from solid to liquid
(PP) Boiling point: (extensive property)
Temperature at which a substance changes from liquid to gas
