Diamonds have a hardness of 10 on the Mohs scale. Is that a physical or chemical property?
a.
physical
b.
chemical
Acid chlorides react quickly with water to form hydrochloric acid. Is that a physical or chemical property?
a.
physical
b.
chemical
Ethyl propanoate smells like pineapples. Is that a physical or chemical property?
a.
physical
b.
chemical
Sodium azide in air bags decomposes rapidly forming nitrogen gas. This is an example of what type of property?
a.
physical
b.
chemical
A candle burning is an example of what type of change?
a.
physical
b.
chemical
Water condensing on a glass is an example of what type of change?
a.
physical
b.
chemical
The boiling point of acetone is 56 degrees Celsius. This is an example of what type of property?
a.
intensive
b.
extensive
Emeralds are green. This is an example of what type of property?
a.
intensive
b.
extensive
The density of silver is 10.5 g/cm3. This is an example of
a.
a chemical property
b.
an intensive property.
c.
an extensive property
d.
both A and B
An intensive property . . .
a.
involves a chemical reaction when it is measured
b.
depends on the amount of the substance present
c.
does not depend on the amount of sample
d.
none of the above
Physical changes _______________
a.
change the way atoms are bonded to form molecules
b.
always involve a reaction occurring
c.
do not change the chemical properties of a sample
d.
Both A and B
Which of the following is NOT a chemical change?
a.
Water evaporating
b.
Nails rusting
c.
Fireworks exploding
d.
Combustion of gas in a car's engine
Melting point is an example of
a.
an intensive property and a chemical property
b.
an intensive property and a physical property
c.
an extensive property and a chemical property
d.
an extensive property and a physical property