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Chapter 4
Introduction to Physical Science
58
Science
7th Grade
02/02/2007

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Term
Matter
Definition
all substances in God's creation
Term
Material
Definition
things made up of matter, things you can touch, taste, feel, see or smell
Term
Immaterial
Definition
does not consist of matter
Term
THE 3 STATES OF MATTER
Definition
GAS, LIQUID, SOLID
Term
SOLID
Definition
HAS DEFINITE SHAPE AND VOLUME
Term
LIQUID
Definition
HAS DEFINATE VOLUME BUT NO DEFINATE SHAPE
Term
GAS
Definition
HAS NO DEFINITE VOLUME OR SHAPE
Term
3 FORMS OF WATER
Definition
SOLID, GAS & LIQUID
Term
PHYSICAL PROPERTIES
Definition
THOSE PROPERTIES OF A SUBSTANCE THAT CAN BE DETERMINED WITHOUT CHANGING IT INTO A DIFFERENT SUBSTANCE
Term
TEMPERATURE
Definition
AN OBJECTIVE NUMERICAL WAY TO MEASURE HOTNESS OR COLDNESS
Term
QUANTIFICATION
Definition
THE SYSTEMATIC PROCESS OF ACCURATELY MEASURING THE THINGS OF NATURE AND THEIR PARTS
Term
FREEZING POINT
Definition
WHEN A LIQUID CHANGES INTO A SOLID
Term
BOILING POINT
Definition
LIQUID CHANGES TO A GAS
Term
THERMOMETER
Definition
USED TO MEASURE TEMPERATURE
Term
DEGREES
Definition
THE UNITS A THERMOMETER IS DIVIDED INTO
Term
FAHRENHEIT & CELSIUS
Definition
SCALES BOTH BASED UPON THE FREEZING AND BOILING POINTS OF WATER
Term
SOLUBILITY
Definition
THE ABILITY TO BE DISSVOLVED
Term
INSOLUBLE
Definition
UNABLE TO BE DISSOLVED IN WATER
Term
MASS
Definition
THE MEASURE OF QUANTITY OR AMOUNT OF MATTER AN OBJECT CONTAINS
Term
WEIGHT
Definition
THE MEASURE OF THE GRAVITATIONAL FORCE ON AN OBJECT
Term
GRAVITATIONAL FORCE
Definition
DOWNWARD PULL OF A PLANET
Term
DENSITY
Definition
THE MASS OF A SUBSTANCE DIVIDED BY ITS VOLUME

EVERY SUBSTANCE HAS ITS OWN PARTICULAR DENSITY
Term
CHEMICAL PROPERTIES
Definition
THOSE PROPERTIES OF A SUBSTANCE THAT DESCRIBE HOW IT CHANGES WHILE BEING CONVERTED INTO A DIFFERENT SUBSTANCE
Term
CHEMICAL CHANGE
Definition
WHEN TWO OR MORE SUBSTANCES UNITE OR BREAK APART CHEMICALLY
Term
ELEMENT
Definition
THE SIMPLEST TYPE OF SUBSTANCE. AN ELEMENT CANNOT BE BROKEN DOWN TO ANYTHING SMALLER THAN ONE PARTICULAR KIND OF ATOM
Term
ATOM
Definition
SMALLEST PARTICLES OF MATTER
Term
COMPOUND
Definition
NEW SUBSTANCE FORMED FROM THE CHEMICAL UNION OF TWO OR MORE ELEMENTS
Term
RATIO
Definition
SHOWS A FIXED RELATIONSHIP BETWEEN TWO THINGS
Term
CHEMICAL BOND
Definition
UNION
Term
CHEMICAL REACTION
Definition
THE PROCESS OF FORMING A CHEMICAL BOND
Term
NUCLEUS
Definition
CONTAINS PROTONS AND NEUTRONS AND CIRCLING IT ARE ELECTRONS
Term
PROTON
Definition
HAS A POSITIVE ELECTRIC CHARGE
Term
ATOMIC NUMBER
Definition
THE NUMBER OF PROTONS FOUND IN THE NUCLEUS OF A PARTICULAR ATOM
Term
ELECTRON
Definition
HAS A NEGATIVE ELECTRIC CHARGE
Term
NEUTRON
Definition
HAS NO ELECTRIC CHARGE
Term
SCIENTIFIC NOTATION
Definition
A SHORTCUT TO WRITING OUT EXTREMELY LARGE OR SMALL NUMBERS
Term
ATOMIC MASS
Definition
THE SUM OF THE NUMBER OF PROTONS AND NEUTRONS FOUND IN THE NUCLEUS OF AN AVERAGE ATOM OF THAT ELEMENT
Term
STABLE ATOM
Definition
AN ATOM THAT HAS AN EQUAL NUMBER OF ELECTRONS AND PROTONS
Term
MOLECULE
Definition
TWO OR MORE ATOMS THAT ARE CHEMICALLY UNITED
Term
CHEMICAL SYMBOL
Definition
USED TO IDENTIFY EACH ELEMENT
Term
CHEMISTRY
Definition
THE BRANCH OF SCIENCE THAT INVOLVES THE STUDY OF THE COMPOSITION STRUCTURE AND PROPERTIES OF MATTER AS WELL AS THE CHANGES WHICH MATTER UNDERGOES
Term
MIXTURE
Definition
TWO OR MORE SUBSTANCES THAT RETAIN THEIR CHEMICAL AND PHYSICAL PROPERTIES WHEN MIXED TOGETHER
Term
VALENCE ELECTRONS
Definition
THE ELECTRONS IN AN ATOM'S LAST UNFILLED ELECTRON SHELL
Term
ION
Definition
AN ELECTRICALLY CHARGE ATOM (OR BONDED GROUP OF ATOMS) THAT RESULTS FROM THE LOSS OR GAIN OF ELECTRONS
Term
IONIC BOND
Definition
A CHEMICAL BOND IN WHICH ELECTRONS ARE COMPLETELY TRANSFERRED FROM ONE ATOM TO ANOTHER
Term
COVALENT BOND
Definition
ATOMS SHARE ELECTRONS IN ORDER TO COMPLETE THEIR OUTER SHELLS
Term
CHEMICAL EQUATION
Definition
THE REPRESENTATION OF A CHEMICAL REACTION IN TERMS OF CHEMICAL SYMBOLS
Term
PHYSICS
Definition
THE STUDY OF THE INTERACTION BETWEEN MATTER AND ENERGY
Term
ENERGY
Definition
THE ABILITY TO DO WORK
Term
FORCE
Definition
A PUSH OR A PULL MOVES AN OBJECT
Term
KINETIC ENERGY
Definition
THE ENERGY OF MOTION
Term
POTENTIAL ENERGY
Definition
POSITIONED WITHIN A FORCE FIELD, WHICH MEANS THAT IT IS WITHIN THE RANGE OF SOMETHING THAT EXERTS A FORCE OF ATTRACTION OR REPULSION ON IT
Term
STORED ENERGY
Definition
AN OBJECT WITH POTENTIAL ENERGY HAS STORED ENERGY
Term
RADIENT ENERGY
Definition
ENERGY IN THE FORM OF ELECTROMAGNETIC WAVES
Term
LAW OF CONSERVATION OF MATTER & ENERGY
Definition
STATES THAT MATTER & ENERGY ARE INTERCHANGEABLE AND CAN BE NEITHER CREATED NOR DESTROYED
Term
FIRST LAW OF THERMODYNAMICS
Definition
THE TOTAL AMOUNT OF MATTER & ENERGY IN THE UNIVERSE IS CONSTANT
Term
ENERGY FROM WORK
Definition
IN ORDER TO INCREASE AN OBJECTS POTENTIAL ENERGY WORK MUST BE DONE AGAINST THE FORCE(S) ALREADY ACTING UPON THE OBJECT
Term
TRANSFER OF ENERGY
Definition
WHEN AN OBJECT PASSES SOME OR ALL OF ITS ENERGY TO ANOTHER OBJECT. ALL WORK INVOLVES TRANSFER OF ENERGY
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