ATOMS
THE FUNDAMENTAL PROPERTY OF MATTER THAT CAN BE EITHER POSITIVE OR NEGATIVE.
ELECTRIC CHARGE
THE ATTRACTIVE FORCE BETWEEN ELECTRONS AND PROTONS.
ELECTROMAGNETIC FORCE
THE NUMBER OF PROTONS IN THE NUCLEUS OF AN ATOM.
ATOMIC NUMBER
THE FIRST ENERGY LEVEL CAN ACCEPT UP TO HOW MANY ELECTRONS?
2 (TWO)
A PARTICLE WITH A NEGATIVE ELECTRIC CHARGE AND FOUND OUTSIDE THE NUCLEUS.
ELECTRON
THE STRONGEST FORCE KNOWN TO SCIENCE.
STRONG NUCLEAR FORCE
DANISH PHYSICIST DEVELOPED THE MODEL OF AN ATOM THAT CONTAINED ENERGY LEVELS.
NEILS BOHR
THE SECOND ENERGY LEVEL CAN HOLD UP TO HOW MANY ELECTRONS?
8 (EIGHT)
THE TINY CORE AT THE CENTER OF AN ATOM WHICH CONTAINS MORE THAN 99 PERCENT OF THE ATOM'S MASS.
NUCLEUS
THIS FORCE IS WEAKER THAN BOTH THE ELECTRIC FORCE AND STRONG NUCLEAR FORCE.
WEAK FORCE
ATOMS OF THE SAME ELEMENT THAT HAVE DIFFERENT NUMBERS OF NEUTRONS.
ISOTOPES
NITROGEN HAS AN ATOMIC NUMBER OF 7.
HOW MANY ELECTRONS ARE IN THE SECOND ENERGY LEVEL?
5 (FIVE)
A PARTICLE WITH A POSITIVE CHARGE AND FOUND INSIDE THE NUCLEUS OF THE ATOM.
PROTON
ELECTRONS OCCUPY THE SPACE OUTSIDE THE NUCLEUS IN A REGION CALLED?
ELECTRON CLOUD
THE NUMBER OF PROTONS PLUS THE NUMBER OF NEUTRONS IN THE NUCLEUS.
MASS NUMBER
LITHIUM HAS AN ATOMIC NUMBER OF 3.
HOW MANY ELECTRONS ARE IN THE SECOND ENERGY LEVEL?
1 (ONE)
A PARTICLE WITH NO CHARGE AND FOUND INSIDE THE NUCLEUS OF THE ATOM.
NEUTRON
THIS PARTICLE HAS ABOUT THE SAME MASS AS A PROTON.
NEUTRON
THESE WERE THE FIRST PARTICLES DISCOVERED THAT ARE SMALLER THAN ATOMS. (J.J. THOMSON)
ELECTRONS
SODIUM HAS AN ATOMIC NUMBER OF 11.
HOW MANY ELECTRONS ARE IN THE THIRD ENERGY LEVEL?
1 (ONE)