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Science Midterm Vocab
All vocab for Midterm Exam
56
Science
9th Grade
12/08/2009

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Term
Independent variable
Definition
and dependent variables are related to one another.  The Independent part is what you, the experimenter, changes or enacts in order to do your experiment
Term
Dependent variable
Definition

is what changes when the independent variable changes - the dependent variable depends on the outcome of the independent variable.

Term
Hypothesis
Definition
must be a statement, not a question
Term
Control Group
Definition
the group of variables that are under your control during an experiment
Term
Experimental Group
Definition
the group of variables that are not under your control
Term
Conclusion
Definition
short and to the point, state whether your data supported your hypothesis or not
Term
Constant Factors
Definition
the factors of the variables that stay the same in an experiment
Term
Experiment
Definition
it involves controlling one "input" variable, holding all other constant and measuring the effect on an "output" variable of a change in the control variable
Term
Bioethics
Definition
the application of ethics to the field of medicine. Ethicits ask 2 question; "What is the right or good thing to do?" and "What are our obligations to one another?"
Term
Values
Definition
beliefs and morals of a person
Term
Do good/ Do no harm
Definition
the oath that doctors take saying taht they will do no harm to the patient
Term
Justice
Definition
doing what is right and fair
Term
Beneficence
Definition
intended to benefit or promote the good of other persons
Term
Respect for Persons
Definition
respecting a person's request and wishes
Term
Autonomy
Definition
a descion not controlled by outside forces
Term
Volume
Definition
the amount of space and object takes up
Term
Mass
Definition
the amount of matter in an object
Term
Density
Definition
the measure of mass per unit of volume of a substance
Term
Temperature
Definition
the degree of hottness or coldness of a substance
Term
Distance
Definition
the amount of space from one point to another
Term
Gram
Definition
a unit of measurement in weight
Term
Liter
Definition
a unit of measurement in a liquid
Term
Meter
Definition
a unit of measurement in distance
Term
Gravity
Definition
the force attraction between all objects in the universe
Term
Energy Level
Definition
the possible level of energy that an electron can have in an atom
Term
Molecule
Definition
composed to 2 or more atoms that are chemically combined
Term
Atom
Definition
smallest component of an element
Term
Elements
Definition
are made up of one type of atom
Term
Compounds
Definition
are made up of one kind of molecule
Term
Mixtures
Definition
not pure substances. It is 2 or more substances that are mixed together but are not chemically combined, They can be separated by physcial means.
Term
Colloid
Definition
a mixture which one substance is dispersed evenly throughout another, and the particles are bigger than that of a solution but the particles dont settle
Term
Suspension
Definition
a mixture with bigger particles and it does eventually settle out
Term
Solution
Definition
smaller particles,does not settle, remains in mixture
Term
Homogenous
Definition
the particles are small, they stay evenly distributed (kool aid)
Term
Heterogenous
Definition
larger particles that settle out (sand and water)
Term
subatomic particle
Definition
smaller than an atom
Term
neutron
Definition
neutrally charged
Term
proton
Definition
positivly charged
Term
electron
Definition
negativly charged
Term
solids
Definition
have a certain shape, mass, volume
Term
liquids
Definition
has a certain volume
Term
Gases
Definition
doesn't have a certain shape or volume
Term
Plasma
Definition
the state of matter with the highest energy level (sun & stars)
Term
Chemical Symbol
Definition
abbreviation for an element
Term
atomic number
Definition
number of protons in the nucleus
Term
atomic mass
Definition
Term
the average of masses of isotopes of an element
Definition
Term
mass number
Definition
total numberof protons and neutrons
Term
atomic mass unit
Definition
AMU
Term
bohr model
Definition
a model of the atomic structure of an atom
Term
metals
Definition
malleable, ductile, good conductors of heat and electricity, shiny
Term
non-metals
Definition
brittle and dull, not malleable and ductile, poor conductors of heat and electricity
Term
Metalloids
Definition
conducts small amounts of heat and electricity, some are used as semiconductors
Term
Transition Metals
Definition
similar to one another and other metal, valence electron may vary
Term
Lanthanides
Definition
rare earth metals, highly reactive
Term
Actinides
Definition
radioactive elements, highly reactive
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