Chemistry Flashcards
Periodic Table Families
•Alkali Metals
•Alkaline Earth Metals
•Transition Metals
•Boron Group
•Carbon Group
•Nitrogen Group
•Halogens
•Noble Gases
•Rare Earth Metals
All Models for Atom
•4 Elements (Aristotle)
•Indivisible Atomos (Democritus)
•Billiard Ball (Dalton)
•Plum Pudding (Thomson)
•Nuclear (Rutherford)
•Planetary (Bohr)
•Quantum Mechanical (Shrodïnger)
Liquid to Gas
Boiling
Gas to Liquid
Condensation
Liquid to Solid
Freezing
Solid to Liquid
Melting
Solid to Gas
Sublimation
Gas to Solid
Deposition
Gas to Plasma
Ionization
Plasma to Gas
Recombination
Physical Classification of Matter
•Solid
•Liquid
•Gas
•Plasma
Chemical Classification of Matter
•Pure Substance
•Mixture
Pure Substance Classification
Element
•Metal
•Non-Metal
•Metalloid
Compound
•Organic
•Inorganic
Mixture Classification
Homogeneous
•Solution
•Alloy
•Colloid
Heterogeneous
•Colloid
•Suspension
Particle Theory
•All matter is made up of tiny particles
•Particles attract one another
•Particles are in constant, random motion
•Different substance are made of different particles
•All particles have space between them
•Particles move faster with heat
Solid Particle Movement
Vibrational
Liquid Particle Movement
•Vibrational
•Rotational
Gas Particle Movement
•Vibrational
•Rotational
•Translational
Where are electrons found?
Orbiting nucleus
Where are protons found?
Nucleus
Where are neutrons found?
Nucleus
Compare elements and compounds
•Element is made of one type of atom
•Compound is made of multiple compounds
•Both are pure substances
Mass of proton
1 amu
Mass of electron
1 amu
Mass of neutron
1/2000 amu
Identity of an element
Atomic Number or Number of protons
What substances glow when heated?
Gas
What is a clue about the physical identity of a substance?
Density
What is ionic compound made of?
Metal + Non Metal
What are covalent bonds made of?
Non metal + non metal
What did the gold foil experiment prove?
Atoms have tiny, positively charged nucleus
Who discovered electrons?
Thomson (Plum Pudding)
Charcoal
•Joined with other carbon atoms
•98% mixed with other chemicals
Graphite
•Good conductor
•Organized hexagons (Interconnected sheets)
Diamonds
•Do not conduct electricity
•High temp. and pressure
•Regular patterns
•Interconnected in 3 dimensions
How does diamond mining effect the economy?
•Expensive to operate machinery
•15% diamond supply from Canada
•Canada = top 3 diamond producers
How does diamond mining effect the environment?
•Smaller than gold mining imprint
•Water changed (Fish habitats lost, lake drainage, etc)
How does tantalum affect the gorillas?
It’s mined from their habitat, thus destroying it
What happens when iron meets oxygen?
Rust
What happens when copper meets oxygen?
Corrosion
What happens if the water that meets the iron has salt?
It rusts faster
What is copper oxide?
Coated with green film (patina/verdigris) and protects copper from further corrosion
What does oxygen and water cause to copper?
•Becomes weak
•Becomes brittle
•Rust
Cation
Positively charged, ionic bond
Anion
Negatively charged, covalent bond
Prefixes
Mono - One
Di - Two
Tri - Three
Tetra - Four
Penta - Five
Hexa - Six
Hepta - Seven
Octa - Eight
Nona - Nine
Deca - Ten
Diatonic elements
Oxygen, Nitrogen, Hydrogen, Chlorine, Bromine, Iodine, Fluorine
When do we use prefixes?
Covalent compounds
When do we use “ide”
For ions (e.g. Carbon dioxide, Potassium sulfide)
Oxygen
Glowing splint relights
CO²
Lit splint is extinguished
Hydrogen
Lit splint makes a pop noise