Science 7 inside the atom power point presentation

science

1. ATOMS AND ATOMIC ATOMS AND ATOMIC
STRUCTURESTRUCTURE
Atom Nucleus Proton Neutron Electron Atom Nucleus Proton Neutron Electron

2. WHAT IS AN ATOM?WHAT IS AN ATOM?
oThe smallest unit of The smallest unit of
an element.an element.
oConsists of a Consists of a
central nucleus central nucleus
surrounded by one surrounded by one
or more electrons.or more electrons.

3. WHAT IS THE NUCLEUS?WHAT IS THE NUCLEUS?
oThe central part of The central part of
an atom.an atom.
oComposed of Composed of
protons and protons and
neutrons.neutrons.
oContains most of an Contains most of an
atom's mass.atom's mass.

4. WHAT IS A PROTON?WHAT IS A PROTON?
oPositively charged Positively charged
particle ( +1)particle ( +1)
oFound within an Found within an
atomic nucleus.atomic nucleus.
oMass is 1.67 x 10-Mass is 1.67 x 10-
27 kg27 kg

5. WHAT IS A NEUTRON?WHAT IS A NEUTRON?
o Uncharged particle Uncharged particle
(n) (n)
oFound within an Found within an
atomic nucleus.atomic nucleus.
o1.68 x 10-27 kg1.68 x 10-27 kg

6. WHAT IS AN ELECTRON?WHAT IS AN ELECTRON?
oNegatively charged Negatively charged
particle (-1) particle (-1) ee--
oLocated in shells Located in shells
that surround an that surround an
atom's nucleus. atom's nucleus.
o9.11 x 10-31 kg.9.11 x 10-31 kg.
o1,837 smaller p+1,837 smaller p+

7. Particle
(symbol)
Net
Charge
Mass (kg) Mass
(amu)
Location
in the
Atom
Proton +1 1.67 x
10-27
1 In the
nucleus
Neutron 0 1.68 x
10-27
1 In the
nucleus
Electron -1 9.11 x
10-31
1/1,837Outside
the
nucleus

8. Welcome to MATTERVILLE !!!Welcome to MATTERVILLE !!!