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26 Cards in this Set

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Science
study of physical world: the study of the physical and natural world and phenomena, especially by using systematic observation and experiment
Observation
the careful watching and recording of something, e.g. a natural phenomenon, as it happens
.
Data
information, often in the form of facts or figures obtained from experiments or surveys
.
Inference
a conclusion drawn from evidence or reasoning
Hyothesis
a statement that is assumed to be true
Controlled experiment
an experiment designed to test the effects of independent variables on a dependent variable by changing one independent variable at a time
Theory
A generalization based on many observations and experiments; a verified hypothesis
Cell
Basic unit of life
Homeostasis
The steady-state physiological condition of the body.
Sexual Reproduction
A type of reproduction in which two parents give rise to offspring that have unique combinations of genes inherited from the gametes of the two parents.
Asexual Reroduction
A type of reproduction involving only one parent that produces genetically identical offspring by budding or by the division of a single cell or the entire organism into two or more parts.
Metabolism
The totality of an organism's chemical processes, consisting of catabolic and anabolic pathways
Stimulus
Any internal or external change or signal that influences the activity of an organism or of part of an organism.
Atom
smallest unit of matter that retains the properties of an element.
Nucleus
1) An atom's central core, containing protons and neutrons. (2) The chromosome-containing organelle of a eukaryotic cell. (3) A cluster of neurons.
Electron
A particle with a single negative charge; one or more electrons orbit the nucleus of the atom.
Element
Any substance that cannot be broken down to any other substance
Isotope
One of several atomic forms of an element, each containing a different number of neutrons and thus differing in atomic mass.
Compound
A chemical combination, in a fixed ratio, of two or more elements.
Ionic bond
A chemical bond resulting from the attraction between oppositely charged ions
Covalent bond
A chemical bond formed as a result of the sharing of one or more pairs of electrons.
Molecule
Two or more atoms held together by covalent bonds
Cohesion
The binding together of like molecules, often by hydrogen bonds
Adhesion
The tendency of different kinds of molecules to stick together
Solution
A homogeneous, liquid mixture of two or more substances.solvent The dissolving agent of a solution. Water is the most versatile solvent known.
Solute
A substance that is dissolved in a solution