Honors Bio Vocab 2A

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Unit 2A Honors Biology Biochemistry Vocabulary

MASS

THE QUANTITY OR AMOUNT
OF MATTER

MATTER

ANYTHING THAT OCCUPIES SPACE AND HAS MASS (SOLID, LIQUID, GAS)

ELEMENT

PURE SUBSTANCES THAT CANNOT BE BROKEN DOWN CHEMICALLY INTO SIMPLER KIND OF MATTER

ATOM

THE SIMPLEST PART OF AN ELEMENT THAT RETAINS ALL OF THE PROPERTIES

ATOMIC NUCLEUS

CENTRAL OR CENTER PART OF AN ATOM

PROTON

PARTICLE IN AN ATOM THAT HAS A POSITIVE CHARGE AND IS FOUND IN THE CENTER

NEUTRON

PARTICLE OF AN ATOM THAT HAS NO CHARGE AND IS FOUND IN THE CENTER

ELECTRON

PARTICLE OF AN ATOM THAT HAS A NEGATIVE CHARGE AND IS CONSTANTLY ORBITING THE CENTER

ATOMIC NUMBER

THIS # REPRESENTS THE TOTAL NUMBER OF PROTONS

MASS NUMBER

THIS # REPRESENTS THE TOTAL NUMBER OF PROTONS AND NEUTRONS

ORBITAL

3-D REGION AROUND A NUCLEUS WHERE ELECTRONS CAN BE FOUND

ISOTOPE

ATOMS THAT HAVE THE SAME AMOUNT OF PROTONS BUT DIFFERENT AMOUNTS OF NEUTRONS

COMPOUND

SUBSTANCES THAT ARE MADE UP OF TWO OR MORE ELEMENTS

MOLECULE

SIMPLEST PART OF A SUBSTANCE THAT RETAIN THE PROPERTIES OF THAT SUBSTANCE

CHEMICAL BOND

ATTRACTIVE FORCES THAT HOLD ATOMS TOGETHER

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