1. Anything that has mass and volume
can be observed WITHOUT changing the composition of the substance

2. can only be observed by attempting to change the identity of a substance
because a ping pong ball is filled with air, which is less dense than the dense material that fills a golf ball.

3. density is the amount of matter in a given space
Density = Mass (in grams)
Volume (in cm ) 3

4. a) physical
b) because…
vegetable oil
water
dawn
corn syrup
because density always stays the same, regardless of the size or shape

5. the amount of matter in an object
the amount space an object occupies
during a chemical change, the matter changes composition
because the flavor and composition are the same

6. Change in color or odor
Fizzing or bubbling
Light being released
Heat or sound being released
It will float in the water.
The most dense solid is Zinc.
(It’s NOT mercury, because mercury is a liquid.)
Aluminum, bromine, zinc, mercury

7. - Ability to rusts in damp air
Metal, good conductor, boiling point, melting point, density
Souring, decaying, spoiling, rusting,
Volume = L x W x H
= 2 x 2 x 2 = 8 cm 3
Density = Mass/Volume
= 32 grams/8cm = 4 g/cm 3 3

8. The ability of a substance to be pulled into a wire
solubility
Thermal conductivity
The ability of a substance to be flattened or pulled into sheets
state
the ability of a substance to be flattened or pulled into sheets