NAME AND DESCRIBE THE SUBATOMIC
PARTICLES THAT MAKE UP AN ATOM.
NAME AND DESCRIBE THE SUBATOMIC
PARTICLES THAT MAKE UP AN ATOM.
PROTON – 1 amu, +1 CHARGE, FOUND IN
THE NUCLEUS
NEUTRON – 1 amu, 0 CHARGE, FOUND IN
NUCLEUS
ELECTRON – 0 amu, -1 CHARGE, FOUND IN
ORBITS AROUND THE NUCLEUS
WHAT IS ATOMIC NUMBER, Z?
WHAT IS ATOMIC NUMBER, Z?
Z = # PROTONS IN A NEUTRAL ATOM, IT
IS ALSO EQUAL TO THE # ELECTRONS
WHAT IS ATOMIC MASS?
WHAT IS ATOMIC MASS?
A = ATOMIC MASS = # PROTONS + #
NEUTRONS
WHERE IS MOST OF THE MASS OF AN
ATOM LOCATED?
WHERE IS MOST OF THE MASS OF AN
ATOM LOCATED?
IN THE NUCLEUS
WHAT DETERMINES THE CHEMICAL
PROPERTIES OF AN ELEMENT?
WHAT DETERMINES THE CHEMICAL
PROPERTIES OF AN ELEMENT?
THE ATOMIC NUMBER, WHICH IS ALSO
EQUAL TO THE NUMBER OF ELECTRONS.
THE DENSITY OF ALUMNUM IS 2.70 g/ml. A
PIECE OF ALUMNUM FOIL HAS A VOLUME OF
54 ml. WHAT IS THE MASS OF THIS PIECE
OF ALUMINUM FOIL?
A. 145.8 g
B. 20 g
C. 14.58 g
D. 0.05 g
THE DENSITY OF ALUMNUM IS 2.70 g/ml. A
PIECE OF ALUMNUM FOIL HAS A VOLUME OF
54 ml. WHAT IS THE MASS OF THIS PIECE
OF ALUMINUM FOIL?
A. 145.8 g
B. 20 g
C. 14.58 g
D. 0.05 g
WHICH OF THE FOLLOWING IS AN
EXAMPLE OF A PHYSICAL CHANGE?
A. formation of silver sulfide when silver
reacts with sulfur in the air
B. burning of methane gas, which
produces water and carbon dioxide.
C. condensation of water vapor on the
outside of a cold can of soda
d. vinegar and baking soda, combining and
forming a salt and water.
WHICH OF THE FOLLOWING IS AN
EXAMPLE OF A PHYSICAL CHANGE?
A. formation of silver sulfide when silver
reacts with sulfur in the air
B. burning of methane gas, which
produces water and carbon dioxide.
C. condensation of water vapor on the
outside of a cold can of soda
d. vinegar and baking soda, combining and
forming a salt and water.
HOW DO ISOTOPES OF THE SAME ELEMENT DIFFER?
A. THEY HAVE THE SAME NUMBER OF PROTONS
AND ELECTRONS, BUT A DIFFERENT
NUMBER OF NEUTRONS
B. THEY HAVE THE SAME NUMBER OF
PROTONS AND NEUTRONS, BUT A
DIFFERENT # OF ELECTRONS
C. THEY HAVE THE SAME NUMBER OF
NEUTRONS AND ELECTRONS BUT A
DIFFERENT NUMBER OF PROTONS
D. THEY HAVE DIFFERENT SYMBOLS
HOW DO ISOTOPES OF THE SAME ELEMENT DIFFER?
A. THEY HAVE THE SAME NUMBER OF PROTONS
AND ELECTRONS, BUT A DIFFERENT
NUMBER OF NEUTRONS
B. THEY HAVE THE SAME NUMBER OF
PROTONS AND NEUTRONS, BUT A
DIFFERENT # OF ELECTRONS
C. THEY HAVE THE SAME NUMBER OF
NEUTRONS AND ELECTRONS BUT A
DIFFERENT NUMBER OF PROTONS
D. THEY HAVE DIFFERENT SYMBOLS
AN ISOTOPE OF CHLOLRINE HAS 17
PROTONS AND 19 LNEUTRONS. WHAT IS
THE MASS NUMBER FOR THAT ISOTOPE OF
CHLORINE?
A. 2
B. 17
C. 19
D. 36
WHERE IS 99.99 PERCENT OF THE VOLUME
OF AN ATOM LOCATED?
A. NUCLEUS
B. IN ITS ELECTRON CLOUD
C. IN ITS PROTONS
D. IN IT NEUTRONS
WHERE IS 99.99 PERCENT OF THE VOLUME
OF AN ATOM LOCATED?
A. NUCLEUS
B. IN ITS ELECTRON CLOUD
C. IN ITS PROTONS
D. IN IT NEUTRONS
WHAT IS SCIENCE?
WHAT IS SCIENCE?
A SYSTEMATIC STUDY OF HOW THINGS
HAPPEN.
WHAT IS CHEMISTRY?
WHAT IS CHEMISTRY?
THE SCIENCE OF MATTER AND ITS
INTERACTIONS.
WHAT IS PHYSICS?
WHAT IS PHYSICS?
THE SCIENCE OF ENERGY
WHAT IS LIGHT?
WHAT IS LIGHT?
A FORM OF ENERGY WITH BOTH WAVE AND
PARTICLE PROPERTIES.
HOW ARE TWO WAYS THAT YOU COULD
CHARACTERIZE LIGHT?
HOW ARE TWO WAYS THAT YOU COULD
CHARACTERIZE LIGHT?
WAVELENGTH
FREQUENCY
AT WHAT WAVELENGTHS DOES VISIBLE
LIGHT EXIST?
AT WHAT WAVELENGTHS DOES VISIBLE
LIGHT EXIST?
400 TO 700 nm
HOW DOES THE ENERGY PER PHOTON
CHANGE WITH INCREASE IN WAVELENGTH?
HOW DOES THE ENERGY PER PHOTON
CHANGE WITH INCREASE IN WAVELENGTH?
ENERGY DECREASES
WHAT KIND OF SPECTRA DOES A HEATED
SOLID EMIT?
WHAT KIND OF SPECTRA DOES A HEATED
SOLID EMIT?
CONTINUOUS OR BAND SPECTRA
WHY?
WHAT KIND OF SPECTRA DOES A HEATED
SOLID EMIT?
CONTINUOUS OR BAND SPECTRA
WHY?
THE ATOMS ARE PACKED CLOSE TOGETHER,
AND THE ELECTRONS INTERFER WITH EACH
OTHER.
WHAT KIND OF SPECTRA DOES A HEATED
GAS EMIT?
WHAT KIND OF SPECTRA DOES A HEATED
GAS EMIT?
LINE SPECTRA
WHY?
WHAT KIND OF SPECTRA DOES A HEATED
GAS EMIT?
LINE SPECTRA
WHY?
THE ATOMS ARE FAR APART, AND THE
ELECTRONS ON ONE ATOM CAN ACT
INDEPENDENTLY FROM THOSE ON
ANOTHER.
AS THE TEMPERATURE OF A SOLID
INCREASES, HOW DOES THE lmax
(wavelength of maximum light intensity)
CHANGE?
AS THE TEMPERATURE OF A SOLID
INCREASES, HOW DOES THE lmax
(wavelength of maximum light intensity)
CHANGE?
IT IS SHIFTED TO SHORTER
WAVELENGTHS.
WHAT IS THE DOPPLER EFFECT?
WHAT IS THE DOPPLER EFFECT?
HOW WAVELENGTH CHANGES WHEN AN
EMITTING OBJECT IS MOVING RELATIVE
TO YOU
NAME THREE THINGS THAT ASTRONOMERS
CAN MEASURE USING LIGHT.
NAME THREE THINGS THAT ASTRONOMERS
CAN MEASURE USING LIGHT.
TEMPERATURE
CHEMICAL COMPOSITION
SPEED RELATIVE TO EARTH
PRESENCE OF PLANETS AROUND A STAR
WHAT DOES TEMPERATURE MEASURE?
WHAT DOES TEMPERATURE MEASURE?
THE AVERAGE KINETIC ENERGY OF THE
PARTICLES IN THE OBJECT.