PHYSICAL AND CHEMICAL PROPERTIES
7TH GRADE
NOTES/LECTURE PGS. 594-596
DO NOW TOGETHER… (WITH YOUR LAB GROUP)
 Imagine you are at a fair/carnival. Describe what you
are experiencing with your senses (see, touch, taste,
hear and smell.)
 Check True/False Activity
OBJECTIVES
Students will…
 Identify physical and chemical properties of matter
 Classify objects based on physical properties
PHYSICAL PROPERTIES
 A physical property is a characteristic that you can observe
without changing or trying to change the composition of the
substance.
 Examples of physical properties might be how something
looks, smells, sounds or tastes. (Use your senses!)
PHYSICAL PROPERTIES
 To describe a sample of matter, you need to identify its state.
(solid, liquid, gas). Name some examples of each state of matter.
Solid
Liquid
Gas
PHYSICAL PROPERTIES FOLDABLE FOR NOTES
 We will be creating a foldable describing the
physical properties of matter.
 Create foldable according to teacher
instructions.
Physical Properties fall into 2 categories:
Size-Dependent and Size-Independent.
SIZE DEPENDENT PROPERTIES
 Size-Dependent Properties rely on the size of the
object. ( 3 properties)
 1) Volume: the amount of space in an object
 2) Mass: the amount of matter in an object
 3) Weight: depends on the mass and the strength of
gravity
SIZE-INDEPENDENT PROPERTIES
 Size-Independent Properties DO NOT rely on the size
of an object. (7 properties)
 1) Density: the amount of mass in a given volume
 2) Solubility: amount of a substance that will dissolve
another substance
 3) Melting point: temperature at which a solid changes
into a liquid
SIZE-INDEPENDENT PROPERTIES
 4) Boiling Point- temperature at which a liquid turns into a
gas
 5) State of Matter- whether a substance is a solid, a liquid
or a gas.
 6) Magnetic Properties: can or cannot attract a magnet
 7) Color: wavelength of light reflected
TO REVIEW
 Properties of Matter
 For Next Time…
 Test signed by tomorrow
 Bring in one or two objects from home that can be used to
describe physical properties of matter
 Examples: a book, toy, figurine, food wrapper etc…
PHYSICAL AND CHEMICAL PROPERTIES
7TH GRADE
NOTES PGS 597-598
PHYSICAL PROPERTIES ACTIVITY
DO NOW…
 Describe the physical properties of a baseball.
(Hint: state, shape, texture, color, mass etc…)
Properties of Matter
OBJECTIVES
 Students will…
Identify physical properties of certain substances
Explore chemical properties of matter
Describe physical properties of known everyday objects
PHYSICAL PROPERTIES OF SPECIFIC SUBSTANCES
Substance
Ammonia
Bromine
Calcium
Carbonate
Iodine
Potassium
Hydroxide
Sodium
Chloride
Water
State
Density (g/cm)
Melting point ©
Boiling point ©
Solubility in
cold water
(g/100mL)
CHEMICAL PROPERTIES
 Chemical Properties are characteristics that cannot be
observed without alternating or changing the substance.
 It is the ability of a substance to undergo a change the
alters its identity.
PHYSICAL PROPERTIES OF OBJECTS
Object
Picture
of
Object
Color
Shape
Smell
Texture
State
FOR REVIEW
 Physical vs. Chemical Properties
 For Next Time…
 Each lab group needs to bring in for lab on Monday: egg,
piece of fruit, a vegetable, baggie of dry cereal and a slice
of bread. (divide up among members!)