27 terms

Science words 1-15/29-40

STUDY
PLAY
PERIODIC TABLE OF ELEMENTS
- A SYSTEMATIC ARRANGEMENT OF ELEMENTS THAT ACCOUNTS FOR THE SIMILARITIES AND DIFFERENCES IN THE PROPERTIES OF VARIOUS ELEMENTS
METALS
- THE ELEMENTS THAT ARE SHINY, CONDUCT HEAT AND ELECTRICITY, ARE MALLEABLE AND DUCTILE, AND ARE LOCATED TO THE LEFT OF THE ZIGZAG LINE.
NONMETALS
- THE ELEMENTS THAT ARE POOR CONDUCTORS OF HEAT AND ELECTRICITY, ARE BRITTLE, AND ARE LOCATED TO THE RIGHT OF THE ZIGZAG LINE.
METALLOIDS
- LOCATED ALONG EITHER SIDE OF THE ZIGZAG LINE, THESE ELEMENTS POSSESS PROPERTIES OF BOTH THE METALS AND THE NONMETALS.
PERIOD (row) OF ELEMENTS
A HORIZONTAL ROW IN THE PERIODIC TABLE OF ELEMENTS THAT HAVE THE SAME NUMBER OF ENERGY LEVELS
GROUP (column) OF ELEMENS /ALSO CALLED A FAMILY
- A VERTICAL COLUMN IN THE PERIODIC TABLE THAT MAKES UP A FAMILY OF ELEMENTS WITH SIMILAR PROPERTIES
ELECTRON CONFIGURATION
- THE NUMBER OF ELECTRONS IN EACH ENERGY LEVEL OF AN ATOM. THE GREATER THE DISTANCE FROM THE NUCLEUS OF AN ATOM, THE GREATER THE ENERGY IN THE ELECTRON
LUSTER
- THE ABILITY OF A SUBSTANCE TO SHINE BY REFLECTING LIGHT
DENSITY
- THE AMOUNT OF MATTER (MASS) IN A GIVEN VOLUME OF A PARTICULAR SUBSTANCE (STATED IN GRAMS PER CUBIC CENTIMETER FOR SOLIDS AND GRAMS PER MILLILITER FOR LIQUIDS AND GASES)
DUCTILE (DUCTILITY)
- ABLE TO BE DRAWN INTO A WIRE
MALLEABLE (MALLEABILITY)
- ABLE TO BE HAMMERED INTO DIFFERENT SHAPES WITHOUT BREAKING
INERT
- NOT REACTIVE
NOBLE GASSES
- THE ELEMENTS THAT ARE CONTAINED IN COLUMN VIII OF THE PERIODIC TABLE
ALKALI METALS
- A GROUP OF HIGHLY REACTIVE SOFT METALS OF LOW DENSITY THAT ARE GOOD CONDUCTORS, ARE MALLEABLE AND DUCTILE, AND HAVE A LOW MELTING POINT
HALOGENS
- THE ELEMENTS LISTED IN COLUMN VII OF THE PERIODIC TABLE THAT TEND TO GAIN ELECTRONS
CONCENTRATION
- THE AMOUNT OF A SUBSTANCE THAT IS PRESENT IN A GIVEN SPACE (USUALLY STATED IN GRAMS PER 100 MILLILITERS)
ANTACID
A SUBSTANCE THAT SLOWLY NEUTRALIZES ACIDS
ACID
A COMPOUND THAT DISSOCIATES IN SOLUTION TO FORM HYDROGEN IONS (HYDRONIUM IONS). A PROTON DONOR
BASE
- A COMPOUND THAT DISSOCIATES IN WATER TO FORM HYDROXIDE IONS
SALT
- A COMPOUND MADE UP OF ANY POSITIVE ION EXCEPT HYDROGEN AND ANY NEGATIVE ION EXCEPT HYDROXIDE
INDICATOR
- A SUBSTANCE THAT SHOWS THE PRESENCE OF ANOTHER FORM OF MATTER BY A COLOR CHANGE
LITMUS
- AN INDICATOR FOR ACIDS (RED) AND BASES (BLUE)
PHENOLPHTHALEIN - phth
- AN INDICATOR THAT IS COLORLESS IN ACID AND PINK IN BASE
CONGO RED
- AN INDICATOR THAT IS BLUE IN ACID AND RED IN BASE
NEUTRALIZATION REACTION
- THE PROCESS BY WHICH ACIDS AND BASES CANCEL EACH OTHER OUT AND PRODUCE SALTS AND WATER AND A FINAL PH OF 7
HYDROGEN (H)+ ION
- A HYDROGEN ATOM THAT HAS LOST ITS ONLY VALENCE ELECTRON; THEREFORE, IT IS A SINGLE PROTON
HYDROXIDE (OH)- ION
- A RADICAL CONTAINING A HYDROXYL GROUP