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48 terms

Chemistry Simple Vocab

STUDY
PLAY
Precision
the exactness of a measurement
Accuracy
the quality of nearness to the truth or the true value
Quantitative
data that is measurable; obervations based on numbers
Qualitative
relating to or involving comparisons based on qualities
Meniscus
the curve at a liquid's surface by which you measure the volume of the liquid
Density
the amount of matter in a given space
superscript
text placed slightly higher than other text on a line
subscript
a character or symbol set or printed or written beneath or slightly below and to the side of another character
mass
the amount of matter in an object
weight
A measure of the force of gravity on an object
volume
the amount of space an object takes up
matter
that which has mass and occupies space
heterogeneous
consisting of elements that are not of the same kind or nature
homogeneous
all of the same or similar kind or nature
electrolysis
the process in which an electric current is used to produce a chemical reaction, such as the decomposition of water
distillation
the process of purifying a liquid by boiling it and condensing its vapors
filtration
the process whereby fluids pass through a filter or a filtering medium
decantation
A method of separating solid insoluble particles from a liquid by leaving the particles to settle and pouring off the liquid.
evaporation
the process of becoming a vapor
luster
the visual property of something that shines with reflected light
ductile
capable of being shaped or bent or drawn out
malleable
capable of being shaped
soluble
(of a substance) capable of being dissolved in some solvent (usually water)
electrolyte
a substance that dissolves in water to give a solution that conducts electric current
melting
the process whereby heat changes something from a solid to a liquid
freezing
the withdrawal of heat to change something from a liquid to a solid
condensation
the process of changing from a gaseous to a liquid or solid state
vaporization
the change from a liquid to a gas
sublimation
(chemistry) a change directly from the solid to the gaseous state without becoming liquid
precipitate
separate as a fine suspension of solid particles
kinetic
supplying motive force
endothermic
(of a chemical reaction or compound) occurring or formed with absorption of heat
exothermic
gives off heat
Diffusion
Gas particles moving (cookies in house)
Properties of matter
Describe and identify matter
Numeric properties
Freezing/Melting Point
Mass
Volume
Density
ETC.
Chemical Properties
-Able to combine and change
-Ability to burn
-Ability to rust
Physical Change
Change in form, not in composition
-Cutting
-Melting
-Vaporization
-Dissolving
-Condensation
-Freezing
-Change of Phases
Chemical Change
Change in composition, has new properties
- Cooking
- Digesting
- Rusting
- Burning
Indications of Chemical Change
-Energy change (hot, cold, lights)
-Color change (gas, odor, bubble)
-Precipitate (solid forms)
Elements
Simplest kind of matter
One kind of matter
Can't be broken down
Compounds
Two or more elements
Can be separated by CHEMICAL means (decomposition by heat)
Identified by formulas
Mixture
Two or more types of matter
Varying proportion or composition
Can be separated by PHYSICAL means
Homogeneous
Same composition
One phase
Heterogeneous
Not the same
Two or more
System
Process you're observing
Endothermic
Energy goes into the system and is absorbed
Comes from outside
Melting, Vaporizing
Exothermic
Energy goes into surrounding and is released
Thing gets colder
Freezing, condensing