Science: Unit 2: Matter And Chemical Change

Front 1

Properties of Matter

Back 1

Physical properties
- characteristics that distinguish matter based on its apperance, state of condition
- ex. melting/boiling point, hardness, malleability, ductility, crystal shape, solubility, density, conductivity (electrical or thermal)
Chemical properties
- characteristics that describe how matter behaves and interacts

Front 2

Antoine Lamoisier

Back 2

- known as father of modern chemistry
- developed a system for naming chemicals

Front 3

Robert Boyle

Back 3

- experimented with gases and combining gases
- same theory as Democritus
- tiny particles combined together to make different substances

Front 4

Andreas Libau

Back 4

- book called Alchemia - how to prepare chemicals (1597)

Front 5

Alchemists

Back 5

- pseudoscientist
- metals could be changed into gold
- created scientific method
- 500BC - 1600AD

Front 6

Aristotle

Back 6

- classified all matter into Earth, Air, Water and Fire model
- aroung 500BC

Front 7

Democritus

Back 7

- matter - tiny unbreakable parts
- atoms: Greek for smallest particle that could not be broken down (indivisble)
- around 500BC

Front 8

Matter

Back 8

- anything that has mass and occupies space
- light and sound energy are NOT matte
- properties are characteristics used to distinguish and/or differentiate between matter
- 3 states; solid, liquid, gas

Front 9

Mixture

Back 9

- matter made up of 2 or more pure substances in varying quanties
- mixed - do not react with eachother
- homogeneous or heterogenous mixtures

Front 10

Mechanical Mixtures

Back 10

- can see 2 or more parts
- separted easily through physical means
- heterogenous mixture
- ex. trail mix, sand +water

Front 11

Solutions

Back 11

- 1 part visible
- homogeneous mistures
- solvent - more
- solute - less
- dissolved in water - aqueous solution
- ex. water, tea, air

Front 12

Suspensions

Back 12

- cloudy mixture
- seperated through filter paper
- ex. tomato juice

Front 13

Colloid

Back 13

- cloudy mixture
- cannot be easily separted out
- ex. milk, ketchup

Front 14

Phase Change Diagram

Back 14

state/phase depends on temperature
fusion: soild - liquid (melting)
fusion: liquid - solid (solidification)
liquid - gas (evaporation/vaporization)
gas - liquid (condensation)
solid - gas (sublimation)

Front 15

Pure Substance

Back 15

- matter made up of only 1 kind of substance, always having the same properties

Front 16

Element

Back 16

- pure substance made up of 1 kind of atom
- properties don't change
- organized on Periodic Table

Front 17

Compound

Back 17

- pur substance made up of 2 or more different elements
- each has its own properties and name
- ex. water (H2O), salt (NaCl)