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Physical Properties
metals, non-metals, metalloids and density review
Term | Definition |
---|---|
physical properties | measurable characteristics that describe the physical state of something; includes mass, magnetism, temperature, density, luster and conductivity |
metals | elements to the left side of the stair step line on the Periodic Table; typically solid, shiny, malleable, and good conductors of heat and electricity |
non-metals | elements to the right side of the stair step line on the Periodic Table; typically dull, brittle, and poor conductors of heat and electricity |
metalloids | elements along the stair step line on the Periodic Table; have properties of both metals and non-metals; also called semi-conductors |
luster | how a material reflects light; shiny objects reflect a lot of light; dull objects do not reflect much light |
conductivity | the ability of a substance to transfer heat or electrical energy |
malleability | the ability of something to be shaped without breaking; example - aluminum foil |
ductility | the ability of something to be pulled into a wire |
brittle | breaks easily |
poor conductor | a material that does not transfer heat or electrical energy very well |
good conductor | a material that easily transfers heat or electrical energy |
semi-conductor | a material that transfers heat and electrical energy better than a non-metal but not as well as a metal; the foundation of modern electronics |
matter | anything that has mass and takes up space |
density | the relationship between mass and volume; calculated using the formula D = m/v |
volume | the amount of space an object occupies; for a rectangular prism calculated V = lwh |
displacement | a method for calculating the volume of oddly shaped objects using a graduated cylinder and water; subtract the after water level from the before water level to find the volume |