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 NEUTRONS. WHAT IS
THE MASS NUMBER FOR THAT ISOTOPE OF
CHLORINE?
A. 2
B. 17
C. 19
D. 36
AN ISOTOPE OF CHLOLRINE HAS 17
PROTONS AND 19 NEUTRONS. 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 DOES TEMPERATURE MEASURE?
WHAT DOES TEMPERATURE MEASURE?
THE AVERAGE KINETIC ENERGY OF THE
PARTICLES IN THE OBJECT.
WHAT IS A PURE SUBSTANCE?
WHAT IS A PURE SUBSTANCE?
A SUBSTANCE WITH FIXED
COMPOSITION.
WHAT IS AN ELEMENT?
WHAT IS AN ELEMENT?
A SUBSTANCE COMPOSED OF ONLY ONE
KIND OF ATOM.
WHAT IS A COMPOUND?
A SUBSTANCE MADE UP OF MOLECULES
(PARTICLES COMPOSED OF TWO OR MORE
ATOMS).
WHAT IS THE DIFFERENCE BETWEEN A
CHEMICAL CHANGE AND A PHYSICAL
CHANGE?
WHAT IS THE DIFFERENCE BETWEEN A
CHEMICAL CHANGE AND A PHYSICAL
CHANGE?
IN A CHEMICAL CHANGE, CHEMICAL BONDS
ARE BROKEN AND NEW BONDS ARE FORMED.
IN A PHYSICAL CHANGE, COMPOSITION
DOES NOT CHANGE.
WHAT IS A MIXTURE?
WHAT IS A MIXTURE?
A SUBSTANCE WITH VARIABLE
COMPOSITION.
WHAT ARE THE TWO KINDS OF MIXTURES?
WHAT ARE THE TWO KINDS OF MIXTURES?
HOMOGENEOUS MIXTURE – UNIFORM
COMPOSITION
HETEROGENEOUS MIXTURE – COMPOSITION
VARIES THROUGH OUT THE MIXTURE.
IDENTIFY THE FOLLOWING METRIC
PREFIXES:
MEGA KILO –
CENTI –
MILLI –
MICRO -
IDENTIFY THE FOLLOWING METRIC
PREFIXES:
MEGA - 1,000,000
KILO –
1,000
CENTI – 1 / 100
MILLI – 1 / 1,000
MICRO -1 / 1,000,000