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UNIT 1 VOCABULARY: PRACTICE

QUESTIONS
Across
THE AVERAGE MASS OF THE PROTONS AND NEUTRONS IN AN ELEMENT
THE NUMBER THAT IDENTIFIES AN ELEMENT
A NEGATIVELY CHARED SUBATOMIC PARTICLE
PARTICLES THAT ARE SMALLER THAN THE ATOM
a POSITIVELY CHARGED SUBATOMIC PARTICLE
A SUBATOMIC PARTICLE OF THE NUCLEUS OF AN THAT IS WITHOUT CHARGE
Down
ALL OF THE AREA OUTSIDE THE NUCLEUS
THE SMALLEST UNIT OF AN ELELMENT
A PURE SUBSTANCE THAT CANNOT BE SEPARATED INTO SIMPLER SUBSTANCES
REGION AROUND THE NUCLEUS OF AN ATOMS WHERE ELECTRON CAN BY FOUND
THE TINY, VERY DENSE, POSITIVELY CHARGED REGION IN THE CENTER OF AN ATOM
A SUBSTANCE MADE OF TWO OR MORE ELEMENTS