# Solids 2 Flashcards

vocabulary
Terms Definitions
 color dood DID area: is squared Shear Stress Max 16T/pi*d^3 Volume of a Cylinder (pi)r2(h) strength 4x as much when doubled Vertex Where 3 or more edges meet bases faces that are congruent, parallel polygons examples of amorphous solid glass, rubber, plastic Cube A solid figure with six congruent squares as its faces polyhedron a solid formed by polygons that enclose a single region of space Malleable Capable of being hammered or rolled onto a sheet. Amorphous doesn't have a repeating pattern of molecules ionic solids dissolve in water and conduct electricity Reactivity a substance that enters into a chemical Lateral Faces the sides that arn't on the bottom elastic limit the farthest an object can stretch until it won't go back to its original shape Scaling The study of how size affects the relationship between weight, strength, and surface area Materials They shape our lives and are sometimes created accidentally.Human needs create them too. cylinder is a solid with two congruent circular bases that lie in parallel planes. crystal a substance in which the particles are arranged in an orderly, geometric pattern. elements a substance taht canout be broken down into other substance b chemical or phyical means denisty measurement of how much matter is in a given amount of space Specific Gravity A standard measure of density that is a ratio of mass (or weight) of a substance to the mass (or weight) of an equal volume of water. (specific gravity= mass or weight x mess or weight of an equal volume of water) rectangular prism a shape with... 4 rectangles and 2 squares 6 faces 8 vertices 12 edges compound a substance made of 2 or more elements chemically combines density the measurement of how much mass of a substance is contained in a given volume Material Science Technology A course about the materials in our lives and how they can be manipulated. What are densities given at? Why? Density varies with temperature and pressure so, except for water, densities are given at 0C and atmospheric pressure Surface area of a culinder words: the surface area of S of a cylinder is the sum of twice the base area B and the product of the base circumference C and the height h. Which has the greater density- 1g or uranium or planet Earth? Any amount of uranium is more dense than Earth. The average density of Earth is actually 5.5 g/cm^3, much less than the density of uranium (19 gram/cm&3) What happens as the size of a thing increases? As the size of a thing increases, it grows heavier much faster than it grows stronger volume crystalline melts quickly square pyramid Crystals regular geometric shapes vertices edges meet at points. Surface Area of a Sphere 4(pi)r3 liquid, aqueous ionic solids conduct electricity when Chemicals They are found everywhere in everything. Not just in a laboratory. covalent bonds forces holding covalent network solids together prism a polyhedron with two bases, lateral faces, and lateral edges vapor pressure measure of liquids tendency to evaporate elastic tennis balls and springs are examples of ________ supercooled liquids substances that retain certain liquid properties even at temperatures at which they appear to be solid. GAS A STATE OF MATTER WITH NODEFINITE SHAPE OR VOLUME. Base of a Cylinder the bottom of a cylinder regular polyhedron a polyhedron where each face is enclosed by a regular polygon and each face is congruent to the other faces and the faces meet at each vertex in the exact same way Mixtures Formed when 2 or more elements are mixed together not chemically combined. EX: vinegar and oil, Non Ionic Solids oppositely charged atoms of the lattice points Solid figure A figure that has length, width and height oblique prism a prism that is not a right prism Iron Age 1000BC Iron rarely occurs free in nature. High temperatures are needed. tetrahedron (triangular pyramid) a shape with... 4 triangles 4 faces 3 vertices 1 apex 6 edges liquid a state of matter that has a definite shape lateral area the sum of the areas of the lateral faces of the prism total surface area sum of the areas of all the faces or surfaces that enclose the solid Are all crystals visible to the naked eye? Not all crystals are visible to the naked eye. Their existence in many solids wasn't discovered until x-rays became a toll of research early in the 20th century. *When you look at a sagging bean, can you see it bending down? Yes, well, atoms are tugged away from one another. The top part is slightly longer. Can you see the bottom part is compressed? atoms there are pushed TOWARD one another, making the bottom part slightly longer.
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