問題一覧
1
occupies space and posses rest mass
matter
2
scientific idea that helps us under how particles behave in different states of matter
kinetic particle theory
3
Definite shape, Defrnite volume, Hign density , Rigidity
properties of solid
4
tightly packed togetner, nave Ittle space between them
particles of solid
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Closely packed, have more Kinetic energy than solid particles.
liquid
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characteristics than either be observed or measured
properties
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depends on the amount of matter in a sample
extensive properties
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depends on the type of matter in a sample.
intensive properties
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can be observed or measured unthout changing identy
physical properties
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it undergo chemical change
chemical properties
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refers to the physical or chemical transformation
changes in matter
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involve a change in ome or more physical properties
physical change
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involve change in chemical composition.
chemical change
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plant growth
chemical change
15
melting
physical change
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basic building blocks of matter
atoms
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pure subtance made up of only one type of atom
elemets
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group of two or more atoms that are held together by chemical bonds
molecules
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this is chemically bounded
compounds
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this is not chemically bounded
mixture
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composition is uniform throughout the mixture .
homogeneous mixture
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Mixture in which the composition is not uniform throughout the mixture
heterogeneous mixture
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Is a type of mixture in which one substance (the solute) is dissolved in another substance (the solvent)
solution
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Are a type of mixtures where small particles of one substance are evenly dispersed throughout another substance Ex: milk, fog, smoke
colloids
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Are type of mixtures in which solid particles are evenly dispersed throughout liquid
suspension
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Process by which a substance changes from solid to liquid
melting
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states that energy can neither be created nor be destroyed.
the law of conservation of energy
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Process by which a substance changes from liquid to a solid
freezing
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Process by which a substance changes from liquid to a gas at the boiling temperature of a substance
boiling
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Process by which a liquid changes to a gas at temperatures lower than its boiling point.
evaporation
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liquids that evaporate quickly at room temperature.
volitile liquids
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Process by which a gas changes to liquid
condensation
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Process by which a solid changes directly to a gas without going through a liquid state.
sublimation
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Process by which a gas changes directly to a solid without going through a liquid state
deposition
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Process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration
diffusion
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used for the separation of solids from fluids (liquids or gases) by interposing a medium through which only the fluid can pass.
filtration
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action of purifying a liquid by a process of heating and cooling
distillation
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separates dissolved substance by different interactions with (that is travel through) a material
chromatography
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the action or process using a centrifuge, typically to separate fluids of different densities or liquids from solids.
centrifugation
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method of removing particulates from an air, gas or liquid stream, without the use of filters, through vortex separation.
cyclonic separation
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repeating a particular measurement will usually not obtain precisely the same result.
significant figure
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refers to the closeness of a set values obtained from identical measurement of something
precision
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refers to the closeness of a single measurement to it’s true value
accuracy
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Which of the following is the correct order of getting salt from the mixture of sand and salt?
Dissolving in water – filtration-evaporation
45
Dalton's Atomic Theory was proposed in the year
1808
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Which of the following properties could NOT be used to distinguish table salt and table sugar?
color
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Theory, matter s Composed dode particles that are in motion.
tiny
48
Chromatography is best used to separate
ink component