Chem test 2

Select the ones that are physical properties

• Iron is more dense than aluminum

• Mercury melts at -25 degrees C

• Oil and water do not mix

• iron and oxygen form rust

• magnesium burn brightly when ignited

Does not have a uniform composition and individual substance, remain distinct

• Heterogeneous mixture
• Homogeneous Mixture

A technique that uses porous barrier to separate a solid from a liquid

• Filtration
• Sublimation

• Distilation

A physical separation technique based on differences in the boiling points involved

• Distilation
• Sublimation

• Filtration

A process where a solid changes to vapor without melting. Can separate 2 solids in a mixture

• Sublimation
• Filtration

• Disstilation

Separates the components of a mixture dissolved in either a gas or a liquid based on the ability of each component to travel across the surface of a fixed substrate

• Chromatography
• Crystilization

A separation technique that forms pure solid particles of a substance from a solution containing the dissolved substance

• Crystallization
• Chromotagrophy

Has constant composition throughout, it always has a single phase

• Homogeneous mixture
• Heterogeneous Mixture

At room temperature, mercury is a liquid

• Physical

• Chemical

Common everyday table salt is a(n)

• Atom

• Compound

• Mixture

• None of the above