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31 Cards in this Set
- Front
- Back
solid
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a state of matter that has a definite volume and shape, the particles vibrate back and forth and stay in one fixed position
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crystalline solid
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a substance that is made up of crystals in which the particles are arranged in a regular repeating pattern.
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melting point
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the temperature at which a substance changes from a solid to a liquid
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amorphous solids
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a solid made up of particles that are not arranged in a regular pattern.
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liquids
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a state of matter that has a definite volume and shape.
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viscosity
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the resistance of a liquid to flowing
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gas
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a state of matter with no definite shape or volume
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volume
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the amount of space that matter occupies.
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temperature
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the measure of the average kinetic engergy (energy of motion) of the particles in a substance.
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pressure
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the force of a gases outward push divided by the area of a walls container
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Boyle's Law
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the relationship between the pressure and volume of a gas at a constant temperature, when volume increases temperature decreases
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Charle's Law
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the relationship between the temperature and volume of a gas at a constant pressure, when temperature increases at a constant pressure so does the volume
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matter
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anything that occupies space and has mass
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properties of matter
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the variety of characteristic that can be used to identify any substance
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chemistry
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the study of the properties of matter and how matter changes
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element
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a substance that can't be broken down into other substances by chemical or physical means.
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atoms
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the smallest particle of an element.
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symbol
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usually one-to-two letter set of characters that is used to identify an element
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compound
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a substance made of two or more elements chemically combined
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formula
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a combination of symbols that shows the ratio of elements in a compound
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physical change
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a change that alters the form or appearance of a substance but doesn't make it into a new substance
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chemical change
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a change in matter that produces new substances
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weight
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the measure of the force of gravity on an object
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mass
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a measure of how much matter is in an object
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volume
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the amount of space that matter occupies
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density
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the measurment of how much mass of a substance is contained in a given volume
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Democritis
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lived around 440 b.c. and was one of the first people to have thought that matter was formed of smaller pieces
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John Dalton
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in 1802 he propesed an atomic theory. He was a teacher.
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How small is an atom?
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atoms are so small that for a long time no one thought they would see them. there are more atoms in one grain of sand then there are grains of sand on the whole beach
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chemical bond
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the force that holds two atoms together
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molecule
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a combination of two or more atoms that are bonded together.
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