Matter and Measurement
Is the mass of an object on Earth the same as the mass of the same object on Jupiter?
Yes; both objects have the same amount of matter.
Is carbon dioxide an element or a compound?
compound; it is formed from more than one element
Is boron an element or a compound?
element
(extensive or intensive) A sample of crystalline silicon, a grayish solid, has a mass of 14.3 g.
extensive; depends on size
What is the best technique to separate sugar and sand?
filtration; keeps bigger pieces while smaller compounds go through filter paper
Is air homogeneous or heterogenous?
heterogeneous; particles are not evenly distributed
Is platinum homogeneous or heterogenous?
heterogeneous; particles are not evenly distributed
Is sand homogeneous or heterogenous?
heterogeneous; particles are not evenly distributed
Is a carbonated beverage homogeneous or heterogenous?
homogeneous; particles are evenly distributed
Is vinegar homogeneous or heterogenous?
homogeneous; particles are evenly distributed
Is wood homogeneous or heterogenous?
homogeneous; particles are evenly distributed
(extensive or intensive) Carbon, in the form of diamond, is one of the hardest known materials.
intensive; does not depend on size
(extensive or intensive) Germanium has a density of 5.32 g/cm3
intensive; does not depend on size
(extensive or intensive) Gray tin converts to white tin at 13.2°C.
intensive; does not depend on size
(extensive or intensive) Lead is a bluish-white metal
intensive; does not depend on size
What is the difference between mass and weight?
mass is the amount of matter in an object, weight is the measure of the pull of gravity on an object
Match each technique with a physical behavior it uses to separate crystallization, distillation, filtration?
solubility, melting point, particle size
A silver bar has dimensions of 10.00 cm × 4.00 cm × 1.50 cm, and the density of silver is 10.49 g/cm3. What is the mass of the bar?
10.49 g/cm^(3)* (10.00cm * 4.00 cm * 1.50 cm) = 629 g (3sf)
If a person weighs 135 lb on Earth, what is his or her mass on Jupiter, where the force of gravity is 236% of that on Earth?
135 * 2.36 = 318.6 lb
If a person weighs 176 lb on Earth, what is his or her mass on Mars, where the force of gravity is 37% of that on Earth?
176 * .37 = 65.12 lb
Platinum has a density of 21.45 g/cm3. What is the mass of a platinum bar measuring 3.00 cm × 1.50 cm × 0.500 cm?
21.45g/cm^(3) * (3.00cm * 1.50cm * 0.500cm) = 48.3 (3sf)
What is the best technique to separate salt and water?
Distillation; separation by boiling point
Is it accurate to say that a substance with a mass of 1 kg weighs 2.2 lb?
No; Things weigh different amounts depending on where you are.
Does mass ever depend on location?
No; mass is always constant for a given object
Is water homogeneous or heterogenous?
Trick question; it is a compound
