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Tri 123

52 cards·by joroad
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Matter
Anything that has mass and takes up volume
Volume
The amount of space an object takes up
Qualitative Data
Describing something without using numbers
Quantitative Data
Describing something using measurement and numbers
Scientific Method
A Method of study used by scientists
Variables
A condition of a characteristic or matte that is measured or controlled in an experiment
Theory
A widely accepted hypothesis that has been tested many times
Mass
How much matter an object contains
Scientific Notation
A shortcut method for writing very large and very small numbers
Superscript
A number that is written just above the writing line
Accuracy
How close a measurement is to the correct or accepted value
Precision
How close a measurement is to other measurements of the same thing
Physical Property
A characteristic of a substance that can be observed without changing the substance
State
The physical form of a substance; solid
Solid
A State of mater that has a definite shape or volume
Liquid
A state of matter that has a definite volume
Gas
A characteristic that describes how a substance changes into one or more different substances
Chemical Property
A characteristic that describes how a substance changes into one or more different substances
Physical Change
A change in a substance that affects its physical property
Chemical Change
A change in a substance that results in one or more different substances being formed
Substance
A kind of mater with a definite makeup and definite chemical and physical properties; and element or a compound
Mixture
Two or more substances mixed together; the properties of each substance are not affected by mixing
Heterogeneous Mixture
A mixture in which one or more substances are are unevenly mixed throughout
Homogeneous Mixture
A mixture in which all of the individual substances are evenly mixed throughout; a solution
Solvent
The substance that a solute is dissolved in; usually the substance in a solution that is present in the greatest amount
Aqueous Solution
A solution in which the solvent water
Alloy
A solid solution containing metals
Proton
A particle with a positive charge in the nucleus of an atom
Neutron
A particle with no charge in the nucleus of an atom
Electron
A particle with a negative charge in the atom
Charge
A certain amount of electricity
Nucleus
The center of an atom; consists of neutrons and protons
Periodic Table
A table that shows the names and symbols of elements and is organized be atomic number and electron arragnement
Metal
An element found on the left side of the periodic table; often a shiny solid that can conduct heat and electricity
Nonmetal
An element found on the right side of the periodic table; often a gas or dull solid that does not conduct heat or electricity
Semimetal
An element that has properties of both a metal and a nonmetal; located between metals and nonmetals on the periodic table
Subscript
A number written just below the writing line; in a chemical formulas
Compound
A substance that consists of two or more kinds of atoms that are bonded
Chemical Formula
A group of symbols that shows the number and kinds of atoms in a compound
Freezing or solidification
Liquid to solid
Sublimation
Solid to liquid and gass to solid
Filtration
Separating mixtures so that the larger parts (usually solids) are caught by the filter
Distillation
Separating mixtures by slowly heating two combined liquids so that the one with the lower boiling point boils off first and the other liquid
Substance
A kind of matter with definite makeup or composition
Chemical Bond
A bond formed when two atoms share or transfer electrons
Element
A substance that is made of only one kind of atom
Atomic Number
Equal to the number of PROTONS in an atom
Atom
The tiny particles that make up matter
Chemical Symbol
A one or two letter symbol that represents an element
Monoatomic Atoms
Exist as single atoms in nature; each atom comes separate from one another; examples; Helium & Noble Gases
Diatomic Atoms
Exist as pairs of bonded atoms in nature
Polyatomic Atoms
Exist as groups of three or more bonded atoms in nature