Download 2.1 The Nature of Matter - Sonoma Valley High School

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Metastable inner-shell molecular state wikipedia, lookup

Computational chemistry wikipedia, lookup

Coordination complex wikipedia, lookup

Organic chemistry wikipedia, lookup

Neptunium wikipedia, lookup

Promethium wikipedia, lookup

Atomic orbital wikipedia, lookup

Molecular orbital diagram wikipedia, lookup

Self-assembled monolayer wikipedia, lookup

Molecular Hamiltonian wikipedia, lookup

Nuclear chemistry wikipedia, lookup

Moscovium wikipedia, lookup

Bohr model wikipedia, lookup

Periodic table wikipedia, lookup

Seaborgium wikipedia, lookup

Nuclear binding energy wikipedia, lookup

Dubnium wikipedia, lookup

Physical organic chemistry wikipedia, lookup

Oganesson wikipedia, lookup

Abundance of the chemical elements wikipedia, lookup

Electronegativity wikipedia, lookup

Biochemistry wikipedia, lookup

Adhesion wikipedia, lookup

Redox wikipedia, lookup

Gas chromatography–mass spectrometry wikipedia, lookup

Livermorium wikipedia, lookup

Rutherford backscattering spectrometry wikipedia, lookup

Tennessine wikipedia, lookup

History of chemistry wikipedia, lookup

Aromaticity wikipedia, lookup

Chemical element wikipedia, lookup

Photosynthetic reaction centre wikipedia, lookup

Isotope analysis wikipedia, lookup

Molecular dynamics wikipedia, lookup

Resonance (chemistry) wikipedia, lookup

Homoaromaticity wikipedia, lookup

Nuclear transmutation wikipedia, lookup

IUPAC nomenclature of inorganic chemistry 2005 wikipedia, lookup

Metallic bonding wikipedia, lookup

Electron configuration wikipedia, lookup

Hypervalent molecule wikipedia, lookup

Isotopic labeling wikipedia, lookup

Extended periodic table wikipedia, lookup

Ununennium wikipedia, lookup

Isotope wikipedia, lookup

Chemistry: A Volatile History wikipedia, lookup

Ion wikipedia, lookup

Atomic nucleus wikipedia, lookup

Unbinilium wikipedia, lookup

Chemical bond wikipedia, lookup

History of molecular theory wikipedia, lookup

Atomic theory wikipedia, lookup

Transcript
2.1 The Nature of Matter
Atoms
• Made of protons,
neutrons and
electrons.
• Nucleus holds the
protons(+) and
neutrons (0) + mass.
• Electrons (-) surround
the nucleus, in
constant motion.
Gold atoms: photograph
Elements and Isotopes
24+ elements are found in living things (of 100+
elements)
Some elements have isotopes, with different #s of
neutrons and different mass.
All isotopes of an element have the same chemical
properties b/c their electrons are the same.
Radioactive isotopes
PET scan
• The nuclei decay, releasing radiation at a
constant rate
• Used to:
– Date rocks, fossils
– Kill bacteria
Treat cancer
Act as tracers in organisms
Compounds
NaCl
H2O
• A substance formed by joining atoms together.
• The smallest unit of a compound is a molecule.
• Formulas: tell types of elements in the
compound and their ratios.
Chemical bonds
• Hold atoms together,
forming molecules
• Ionic bonds: electrons
transfer from one
atom to another,
creating a charged
particle, or ion
• Covalent bonds:
atoms share electrons
• Water is a covalently
bonded molecule
found in all living
things
Water molecules are
Attracted to one another
Van der Waals forces
• Forces of attraction between molecules.
• Hold large molecules together.
• Allow geckos to balance the pull of gravity.
These
synthetic
Carbon
nanotubes
make a ‘glue’
10X stickier
than a gecko’s
foot