Physical Properties
Define mass (how do particles determine)?
How closely packed/the number of particles, the type and size of particle.
What are the two units commonly used to measure volume.
ml and cm3
A liquid that is viscous is one that flows ___________. (quickly/slowly)
slowly
Define chemical property.
any property that describes the ability of a substance to react with another substance (forming one or more new substances)
New products with different properties are formed. Physical or chemical change?
Chemical Change
Define physical property.
Any property of matter that can be observed or measured (without it forming a new substance)
How would you determine the volume of a block of wood?
Volume = length x width x height
The greater a substance's resistance to flow, the _____________ the viscosity. The __________ the friction between particles.
higher, greater
Avacadoes and bananas react with this substance. It turns them brown.
Reactivity with oxygen in the air.
Two substances are mixed and the beaker becomes cold. Physical or chemical change.
Chemical change.
Define qualitative physical property.
properties that describe the substance (colour, smell, texture, lustre, state of matter)
A substance with ____________ density will float on a substance with ____________ density.
lower, higher
What test can be done to approximate viscosity. What units is it expressed in?
Flow rate. cm/s
Describe three chemical properties of substances that have a WHMIS symbol.
flammable, corrosive, oxidizer, acute toxicity, explosive
Two or more substances are dissolved into one another. Physical or chemical change?
Physical
Define quantitative physical properties.
properties that are measured numerically (density, boiling point)
What is the formula for density?
Density = mass/volume
A measure of the mass contained in a given volume.
increases
Lack of reactivity of matter is also a chemical property. Such matter is said to be ___________. ___________ is an example.
inert, helium
Name the two categories of pure substances. Can they be separted by physical means?
elements and compounds. Cannot be separated by physical changes. Compounds can broken down into elements by chemical change.
What is the difference between maleability and ductility?
Maleability - able to hammer into flat sheets, shape
Ductility - ability to shape into a wire
For most substances, the density of the solid state is greater than the density of the liquid state. Give the exception to this rule.
Water. Solid water (ice) is less dense than liquid water. (Ice floats on water.)
As the temperature of a gas increases, its viscosity _____________. Why?
_______________ is the ability of a substance to catch fire. What are the end products of this reaction?
Combustibility. Carbon dioxide and water.
sieve, filter, magnet, evaporation, using tongs to pick out different pieces, etc.