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Chemistry - Coggle Diagram
Chemistry
Chapter 2
Physical Properties
Characteristics of a substance that can be observed with out changing the substance
Color
Hardness
Density
Melting point
Malleable
Boiling point
Ductile
Physical Changes
Changes where the properties of the material change but the identity doesn't
Melting
Boiling
Sanding wood
Mixtures
Homogeneous Mixture
Composition is uniform throughout
Air
Salt water
Sugar water
Heterogeneous Mixture
Composition is not uniform throughout
Dirt
Sand and water
Salad
How to separate mixtures?
Filtration
Technique that uses a porous barrier to separate a solid from a liquid
Distillation
Technique that is a based on differences in the boiling points of the substances involved
Crystallization
Technique that results in the formation of pure solid particles of a substance from solution containing
Chromotography
Technique that separates the components of s mixture on the basis of the tendency of each travel or be drawn across the surface
Chemical Changes
Change that produces matter with different composition
Properties of compounds are often very different than individual elements
How do you know?
Energy Change - Light or heat given off or taken in
Odor Change
Bubbles Produced
Color Change
Solid found in liquid
Chemical Properties
Describe the ability of a substance to undergo a specific chemical change
Iron Rusting
Chemical Reaction
Another name for chemical change
It describes the substances and what happened to them in the chemical change
Chapter 1
What is Chemistry?
Study of the composition of matter and the changes it undergoes
Macroscopic vs Microscopic
Macro - Big
Micro - Small
Submicro - Smaller than light
Macroscopic can be touched and measured directly
Microscopic can not be seen with the naked eye
Chapter 4
Laws
Law of multiple proportions
When 2 elements combine with each other to form more than one compound
Law of Conservation of mass
You never get rid of energy
Law of definite proportions
Every chemical compound contains fixed and constant proportions of constituent elements
Important People
Democritus
First to suggest atoms as building blocks on matter
Atomos = "indivisible"
J.J. Thomas
Used cathode ray tube to find the electron
James Chadwick
He found the neutron
John Dalton
Dalton's Atomic Theory
Atom can combine with other atoms in simple ratios
Atoms are in everything
Atoms of the same element are identical
Chemical reactions rearrange the atoms but don't change their identify
Chapter 5
Types of Bonds
Ionic Bonds
Metal and Non-metal
Metallic Bonds
Non-metal and Non-metal
Covalent Bonds
Metal and Metal