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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