Properties and Changes of Matter Flashcards
Matter
Anything that takes up space and has mass
Examples of Matter
Rocks, trees, bicycles, air
Non examples of matter
energy, sunlight, heat, electricity
Physical Properties
A property that can be easily observed without changing the identity of the substance
Examples of Physical Property
density, hardness, color, boiling and melting point
Solubility
Substance that has the ability to dissolve
Conductivity
A material’s ability to allow heat or electricity to flow
Malleability
A substance that has the ability to be hammered into a thin sheet
Melting and Freezing points
The temperatures at which a solid becomes a liquid and a liquid becomes a solid
Density
A measure of how close together its particles are.
Low density = float
High density = sink
Physical Change
A change in appearance, without changing the identity of the material. It can be reversible and irreverable
how to identify a physical change?
it changes shape or size
it dissolves
the substance changes phase
chemical property
any ability to produce a change in the identity of matter
flammability
Material’s ability to burn in the presence of oxygen
reactivity
how rapidly a substance combines chemically with other substance
