Ductility-the ability to be stretched into wires
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Transcript Ductility-the ability to be stretched into wires
Properties of Matter
What is matter?
Matter has mass and volume
Matter is the “stuff” that everything is made
of
Matter can exist in different phases or
states, such as solid, liquid and gas.
Demo #1: Tearing Paper
Does the paper change its chemistry (chemical
identity) and form a new substance with different
properties?
Is the ability to be torn a physical or chemical
property?
Physical Property: a property that can be
tested/observed without changing chemical identity of
the substance; can be undone
Is tearing a physical change or a chemical
change?
Demo #2: Burning Paper
Does the paper change its chemistry (chemical
identity) and form a new substance with different
properties when it is burned?
Is the ability to burn a physical or chemical
property?
Chemical Property: A property that can only be
tested/observed by changing the chemical identity of
a substance; it is difficult to undo
Is burning a physical change or a chemical
change?
Adhesion- tendency of particles of different
substances to attract to one another
(physical or chemical property?)
Brittleness-
The tendency of a solid to break or
shatter (physical or chemical property?)
Cohesion- The tendency of particles of the same
substance to attract one another (physical or chemical
property?)
Density- Mass per unit volume; the mass of a
known volume of matter; compactness (physical or
chemical property?)
Ductility- The ability to be stretched into wire this
is a property of metals (physical or chemical property?)
Elasticity- The tendency of a solid substance to
return to its original form after being stretched
(physical or chemical property?)
Electrical Conductivity- The ability of electricity
to move through a material
(physical or chemical property?)
Hardness- Ability of solids to resist being
scratched (physical or chemical property?)
Luster- The “shininess” of a substance. The
ability of a substance to reflect light.
(physical or chemical property?)
Magnetism- The ability to form a magnetic
field and attract other metals
(physical or chemical property?)
Malleability- The ability to be pounded into flat
sheets—this is a property of metals
(physical or chemical property?)
pH – a measure of how acidic or basic a
substance is.
<7 is acidic
7 is neutral
>7 is basic
Mass- The amount of matter that something is
made of
(physical or chemical property?)
Melting/Freezing point- the temperature at which a
solid turns to liquid AND the temperature at which a
liquid turns to solid (physical or chemical property?)
Substance
Helium
Oxygen
Mercury
Water
Lead
Gold
Melting/freezing
pt.
-272C
-218C
-39C
0C
327C
962ºC
Boiling/condensing
pt.
-269C
-183C
357C
100C
1749C
2162ºC
http://www.youtube.com/watch?v=QaJ_Yxj9bG8
http://www.youtube.com/watch?v=aRwlrFimnZk
Boiling/Condensation Point- Temperature
at which a liquid turns to gas AND Temperature at which
a gas turns to a liquid (physical or chemical property?)
Substance Melting/freezing
pt.
Helium
-272C
Oxygen
-218C
Mercury -39C
Water
0 C
Lead
327C
962ºC
Gold
Boiling/condensing
pt.
-269C
-183C
357C
100C
1749C
2162ºC
Solubility- The ability to dissolve in another
substance—how well the substance dissolves.
(physical or chemical property?)
State of Matter- The physical form in which
a substance exists, such as a solid, liquid, gas,
or plasma. (physical or chemical property?)
Plasma
Surface Tension- Tendency of liquid
particles to stick together, forming a “skin”
(physical or chemical property?)
Tensile Strength- a measure of how far
something will stretch or bend before it cracks or
breaks (physical or chemical property?)
Texture- The smoothness or roughness of a
substance (physical or chemical property?)
Thermal Conductivity- The ability to
transfer thermal energy (heat) from one area to
another (physical or chemical property?)
Viscosity- A liquid’s resistance to flow
(physical or chemical property?)
Volume- The amount of space an object
occupies (physical or chemical property?)
Ability to Burn (Flammability)- Ability of a
substance to support combustion (burn)
(physical or chemical property?)
Ability to Rust- Ability of a metal (like iron)
to bond with oxygen (from air or water) to form
a new substance (physical or chemical property?)
Ability to Corrode- Ability of a substance to
break down and form a new material when
reacting with its environment—water, acid, salt,
etc. (similar to rusting) (physical or chemical property?)