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ELEMENT Z A PROTONS
NEUTRONS
ELECTRONS
Sc 21 45
Rb 37 48
Al 14 13
U 92 143
F 19 9
As 33 75
FILL IN THE BLANKS.
ELEMENT Z A PROTONS
NEUTRONS
ELECTRONS
Sc 21 45 21 44 21
Rb 37 85 37 48 37
Al 13 27 13 14 13
U 92 235
92 143 92
F 9 19 9 10 9
As 33 75 33 42 33
FILL IN THE BLANKS.
FILL IN THE FOLLOWING TABLE FOR PARTS OF AN ATOM:
Particle name
Particle mass
Particle charge
Particle locatio
n
FILL IN THE FOLLOWING TABLE FOR PARTS OF AN ATOM:
Particle name
Particle mass
Particle charge
Particle locatio
nPROTON 1 + NUCLEUS
NEUTRON 1 0 NUCLEUS
ELECTRON
0 - SHELL
WHAT DETERMINES THE CHEMICAL PROPERTIES OF AN ELEMENT?
THE ATOMIC NUMBER, Z, WHICH IS EQUAL TO THE NUMBER OF PROTONS IN THE NUCLEUS (ALSO THE NUMBER OF ELECTRONS IN SHELLS ABOUT THE NUCLEUS)
WHAT IS AN ISOTOPE?
ATOMS WITH THE SAME ATOMIC NUMBER, BUT DIFFERENT ATOMIC MASS (DIFFERENT NUMBERS OF NEUTRONS IN THE NUCLEUS).
WHAT IS THE DIFFERENCE BETWEEN A HETEROGENEOUS MIXTURE AND A HOMOGENEOUS MIXTURE?
AN HOMOGENEOUS MIXTURE HAS UNIFORM COMPOSITION THROUGHOUT, WHILE A HETEROGENEOUS MIXTURE DOES NOT.
WHAT IS THE DIFFERENCE BETWEEN A HYPOTHESIS AND A THEORY?
A HYPOTHESIS IS AN UNTESTED IDEA, WHILE A THEORY IS A TESTED IDEA THAT HAS BEEN PROVEN TO BE CORRECT.
THE DENSITY OF A METAL IS 3.78 g/ml.
YOU HAVE 46 grams OF THE METAL. HOW MANY ml DO YOU HAVE.
D = M/V or V = M/D = 46 g/3.78 g/ml
V = 12.2 ml