Monday, October 20
QUESTION
VOCABULARY
1. Which is an example of a physical change
A. boiling
B. burning
C. rotting
D. rusting
density *
boiling point *
state of matter *
melting point *
shape
freezing point *
solubility
specific heat
magnetism
electrical conductivity
thermal conductivity
malleability
ductility
reactivity
flammability
combustion
oxidation
electrolysis
2. Which of the following best describes why
ice floats in a glass of water?
A. the charged ends of water molecules
attract polar molecules
B. ice is less dense than liquid water
C. ice is more dense than liquid water
D. ice melts at 0˚ C
 already have
Words squared should be defined on
property sheet
NOTES
Return papers to be put in 3 ring
notebook or portfolio
Physical change – a change that affects one
or more physical properties but does not
form a new substance.
Check grade sheet for first 9 week
grade.
Chemical change – when one or more
substances change into a new one with new
properties.
HW : comparing cubes/ life cycle of
an ice cube.
solubility – ability of a substance to dissolve in another substance
specific heat – amount of energy needed to change the temperatre of 1Kg by 1
degree Celsius
magnetism - the property of some materials to attract iron or something that has
iron in it.
thermal conductivity – rate at which a substance transfers heat
electrical conductivity – the ability to allow charges ( electricity) to move through
a material
malleability – ability of a substance to be rolled or pounded into thin sheets
ductility – ability of a substance to be pulled into a wire
reactivity – ability of 2 or more substances to combine and form new substances
flammability – ability of a substance to burn
combustion – rapid combination fo fuel with oxygen and heat to produce heat,
light and new substances
oxidation – the ability to react with oxygen to form rust
electrolysis – use of electricity to break a compound into elements or simpler
compounds