What makes a property physical or chemical?List the following as physical or chemical propertiesLight enough to float on waterSilver gray in colorIn the liquid state reacts spontaneously with its glass container, producing a hole in the containerCan be cut with a sharp knifeChanges from silver gray to black when placed in moist airIn the liquid state it boils at 1317 degrees CelsiusReacts violently with Chlorine to form a white solidBurns in oxygen with a bright red flame

A pycnometer is a glass flask with a tight fitting glass stopper that can be used to determine the density of an insoluble solid by measuring the volume of water ejected out of the pycnometer when sample of the solid is placed in it. Determine the density in g/cm³ of an unknown metal alloy sample from the following measurements. Assume the density of water is 1.000 g/cm³. Mass of clean pycnometer = 25.151 g Mass of clean pycnometer plus water = 42.481 g Mass of clean pycnometer plus metal sample = 39.105 g Mass of clean pycnometer plus metal plus water = 54.265 g (after ejected water is dried from the outside surface) %3D

Which of the following would indicate a physical change has occurred? Bubbles are produced State of matter changes (ex: water becomes steam) O A color change O A precipitate is formed

Identify as an element, compound or mixture of compounds

Can liquid nitrogen gas and liquid oxygen gas be mixed with each other?

The table below lists some properties of a sample of sodim hydroxide. Which of these is a property that changes due to the amount, and therefore, cannot be used to identify a substance?

Nitesh

If matter is uniform throughout and cannot be séparated into other substances by physical means, it is A a compound B either an element or a compound Ca heterogeneous mixture D) an element a homogeneous mixture

A pycnometer is a glass flask with a tight fitting glass stopper that can be used to determine the density of an insoluble solid by measuring the volume of water ejected out of the pycnometer when sample of the solid is placed in it. Determine the density in g/cm³ of an unknown metal alloy sample from the following measurements. Assume the density of water is 1.000 g/cm³. Mass of clean pycnometer = 25.151 g Mass of clean pycnometer plus water = 42.481 g Mass of clean pycnometer plus metal sample = 39.105 g Mass of clean pycnometer plus metal plus water = 54.265 g (after ejected water is dried from the outside surface)

Classify each example as an element, a compound, a heterogenous mixture or homogenous mixture