RANDOM
ALL MATTER IS ___________.
PARTICULATE
THE ATOMIC NUMBER MEASURES THIS
NUMBER OF PROTONS
IF YOU ARE ASKED TO ADD (9.43X10^3 + 45.00 - 9.9) AND MULTIPLY THE ANSWER Y (8.10X10^6), YOUR ANSWER, WITH THE CORRECT NUMBER OF SIGNIFICANT FIGURES IS
8.5
THE STRUCTURE AND ARRANGMENT OF PARTICLES IN MATTER DETERMINES THE __________ OF THAT MATTER
PROPERTIES
THE ATOMIC MASS MEASURES THIS
THE SUM OF PROTONS AND NEUTRONS
THE VOLUME OF A CUBE MEASURES 32.88mm ON A SIDE IS _____cm^3
35.55cm^3
DALTON'S ATOMIC THEORY EXPLAINED THESE THREE LAWS
1. LAW OF CONSERVATION OF MASS
2. LAW OF DEFINITE PROPORTIONS
3. LAW OF MULTIPLE PROPORTIONS
THE MASS OF THE __________ IN AN ATOM IS NEGLIGIBLE COMPARED TO THE OTHER SUBATOMIC PARTICLES.
ELECTRONS
MEASUREMENTS ARE SAID TO BE _______ IF THEY ARE CONSISTENT WITH ONE ANOTHER AND __________ ONLY IF THEY ARE CLOSE TO THE ACTUAL VALUE
PRECISE, ACCURATE
THIS EXPERIMENT THAT SUPPORTED THE DISCOVERY OF ELECTRONS, WAS PERFORMED BY
CATHODE RAY TUBE: J.J. THOMPSON
IF NEON HAS AN ATOMIC MASS OF 20 AND ITS ATOMIC NUMBER IS 10, BUT IT HAS A CHARGE OF 2+ THEN IT HAS ___ ELECTRONS.
8 ELECTRONS
A SMALL CUBE OF COPPER HAS A DENSITY OF 8.96g/cm^3. THE CUBE MEASURES 28.4mm ON A SIDE. THE MASS IN GRAMS IS
205 grams
THESE TWO ASPECTS OF DALTON'S ATOMIC THEORY WERE LATER FOUND TO BE UNSUPPORTED AS NEW DATA WAS DISCOVERED
1. EACH ELEMENT IS COMPOSED OF TINY, INDESTRUCTIBLE PARTICLES CALLED ATOMS. (SUBATOMICAL PARTICLES: I.E. PROTONS, NEUTRONS, ELECTRONS)
2. ALL ATOMS OF A GIVEN ELEMENT HAVE THE SAME MASS AND OTHER PROPERTIES THAT DISTINGUISH THEM FROM THE ATOMS OF OTHER ELEMENTS. (ISOTOPES..?)
THE AVERAGE ATOMIC MASS OF LITHIUM IS 6.941AMU. LITHIUM HAS TWO NATURALLY OCCURING ISOTOPES, Li-6 WITH 7.520% NATURAL ABUNDANCE AND Li-7 WITH 92.48% NATURAL ABUNDANCE. THE MASS OF Li-6 IS 6.0151AMU AND THUS THE MASS OF Li-7 IS
7.016 AMU
A BICYCLE FRAM DISPLACES 3.14 dL OF WATER AND HAS A MASS OF 3.22lbs. THE DENSITY OF THE BICYLCE FRAME IN g/cm^3 IS ____.
HINT: 1kg =2.2046lbs 1mL = 1cm^3
(3.22lbs) (1kg/2.2046lbs) (1000g/1kg) = 1460.58g
3.14dL)(1L/10dL)(1000mL/1L)(1cm^3/1mL)=314cm^3
=4.65g/cm^3