6th Grade Sciene Atoms & Elements
Terms
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- GROUPS 13 - 16 CONTAIN ELEMENTS THAT INCLUDE WHAT GROUPS?
- GROUP 1 AND 17
- WHAT IS MEANT BY THE TERM "REACTIVITY"?
- TENDING TO BE RESPONSIVE OR TO REACT TO STIMULUS
- WHAT HAPPENS WHEN AN ATOM LOSES AN ELECTRON?
- IT LOSES A NEGATIVE CHARGE AND BECOMES A POSITIVE ION
- ELEMENTS IN GROUP 18 ARE KNOWN AS THE _______ ________. GIVE ON EXAMPLE.
- NOBLE GASES EX: HE2 HELIUM
- WHAT ARE VALENCE ELECTRONS?
- ELECTRONS FOUND IN THE MOST OUTERSHELL
- IONIC COMPOUND PROPERTIES
-
*HIGH MELTING POINTS
*HIGH ELECTRICAL CONDUCTIVITY
*HAVE (FORM) A CRYSTAL SHAPE "SALT"
THESE BONDS FORM BETWEEN METALS & NON-METALS - WHERE ARE THE METALLOIDS LOCATED IN THE PERIODIC TABLE?
- ALKALI METALS, GROUP 1
- IONIC BONDS:
- TRANSFER VALANCE ELECTRONS & FORM A STABLE BOND.
- WHAT HAPPENS WHEN AN ATOM GAINS AN ELECTRONS?
- IT BECOMES A NEGATIVE ION (BECAUSE IT GAINS A NEGATIVE CHARGE)
- DEFINE SUBSCRIPT
- A DISTINGUISHING CHARACTER OR SYMBOL WRITTEN DIRECTLY BENEATH OR NEXT TO AND SLIGHTLY BELOW A LETTER OR NUMBER.
- DEFINE CHEMICAL SYMBOL.
- THE SYMBOLS IN THE PERODIC TABLE.
- WHAT IS CONSERVATION OF MASS?
- A PRINCIPLE IN CLASSICAL PHYSICS STATING THAT THE TOTAL MASS OF AN ISOLATED SYSTEM IN UNCHANGED BY INTERACTION OF ITS PARTS.
- CONVALENT BONDS
-
*SHARE ELECTRONS (NO *TRANSFER OF ELECTRONS)
NON-METALS & NONEMETALS
*MOST COMMON MOLECULE - DEFINE CHEMICAL FORMULA
- A RESPRESENTATION OF A SUBSTANCE USING SYMBOLS FOR ITS CONSTITUENT ELEMENTS.
- DEFINE CHEMICAL EQUATION
- A SYMBOLIC REPRESENTATION OF A CHEMICAL REACTION.
- WHAT IS AN ALLOY?
- SOMETHING ADDED THAT LOWERS VALUE OR PURITY.
- WHAT GROUP ARE ALKALINE EARTH METALS? GIVE ONE SPECIFIC CHARACTERISTIC OF THE ALKALINE EARTH METALS AND ONE EXAMPLE.
-
GROUP 2
HARD
CALCIUM - GIVE TWO EXAMPLES OF TRANSITION METALS.
- SILVER, GOLD
- ELEMENTS IN GROUP 3 - 12 ARE CALLED WHAT KIND OF METALS?
- TRANSITION METALS
- ALL THE ELEMENTS WITH AN ATOMIC # GREATER THAN ___ ARE MANMADE.
- 93
- WHAT IS THE DEFINITION OF THE ATOMIC NUMBER?
- THE NUMBER OF PROTONS IN THE NUCLEUS OF AN ATOM.
- WHAT IS AN ATOM?
- THE SMALLEST PARTICLE OF AN ELEMENT.
- DESCRIBE THE STRUCTURE OF AN ATOM.
- THEY ARE A CERTAIN AMOUNT OF SHELLS AND THE DOTS ARE THE ELEMENTS. THE STUFF IN THE SHELL TELL WHAT THE ATOM IS AND HOW MANY ELEMENTS IT HAS.
- WHAT IS AN ELEMENT?
- A SUBSTANCE THAT CAN NOT BE BROKEN DOWN INTO ANY OTHER SUBSTANCES BY CHEMICAL OR PHYSICAL MEANS.
- WHAT IS THE DEFINITION OF ATOMIC MASS?
- THE MASS OF AN ATOM, USUALLY EXPRESSED IN ATOMIC MASS UNTIS.
- BCNO GROUPS
- NOW THEY ARE CALLED METALLOIDS BECAUSE THEY HAVE SOME PROPERTIES OF METALS AND NON-METALS.
- LIST A CHARACTERISTIC OF TRANSITION METALS.
- HARD, SHINY, VERY REACTIVE AND LESS REACTIVE METALS.
- THE ELEMENTS AT THE BOTTOM OF THE PERODIC TABLE ARE KNOWN AS THE _____ _____ ELEMENTS.
- TRANSITION METALS.
- LIST & DEFINE 4 SPECIFIC PROPERTIES OF METALS.
-
1. HARDNESS (SOLID)
2. MALLEABILITY/MALLABLE (CAN POUND INTO SHAPES)
3. CONDUCTERS (TRANSIENT HEAT AND ELECTRICITY WELL)
4. DUCTILITY/DUCTABLE (CAN BE PULLED OUT OR DRAWN INTO A LONG WIRE) - WHICH GROUP CONTAINS THE AKALI METALS? WHAT ARE SOME EXAMPLES OF THEM? WHY ARE THEY ALL SO REACTIVE?
-
1. GROUP 1
2. HYDROGEN, SODIUM, POTASSIUM.
2. BECAUSE THEY ARE METALLOIDS. - COVALENT BOND
- 2 CHEMICAL BONDS FORMED WHEN 2 ATOMS SHARE ELECTRONS.