Week 1 Flashcards
Chemistry
Study of the composition and structure of materials and the changes they undergo
Ways of classifying matter
Physical state
Composition
Physical state classification
Solid (fixed shape)
Liquid (lacks shape but fixed volume)
Gas (lacks shape and volume)
Composition classification
Element (atomic or molecular)
Compound
Mixture vs pure substance
Law of constant composition
Compounds are made up of elements in definite proportions
Heterogeneous mixture
Mixture in which the composition is not uniform throughout
Homogeneous mixture
Mixture in which the composition is uniform throughout (must be the same state)
Types of properties
Physical or Chemical
Intensive or Extensive
Physical properties
Observable properties that can be seen without changing the identity of the substance
Chemical properties
Testable properties that describe the way a substance may change or react to form other substances
Intensive properties
Properties that stay consistent despite the amount of the substance
Extensive properties
Properties that change based on the amount of the substance
Energy
Capacity to do work
Kinetic, potential, and thermal
Mass
Measure of the amount of matter in an object (same regardless of gravity)
Weight
Measure of gravitational pull on an object
K to C
K = 273.13 + C
Derived units
Units derived from other units (density)
Precision
How close each trial is to each other
Accuracy
How close the results are to the true value
Study of the composition and structure of materials and the changes they undergo
Chemistry
Physical state
Composition
Ways of classifying matter
Solid (fixed shape)
Liquid (lacks shape but fixed volume)
Gas (lacks shape and volume)
Physical state classification
Element (atomic or molecular)
Compound
Mixture vs pure substance
Composition classification
Compounds are made up of elements in definite proportions
Law of constant composition
Mixture in which the composition is not uniform throughout
Heterogeneous mixture
Mixture in which the composition is uniform throughout (must be the same state)
Homogeneous mixture
Physical or Chemical
Intensive or Extensive
Types of properties
Observable properties that can be seen without changing the identity of the substance
Physical properties
Testable properties that describe the way a substance may change or react to form other substances
Chemical properties
Properties that stay consistent despite the amount of the substance
Intensive properties
Properties that change based on the amount of the substance
Extensive properties
Capacity to do work
Kinetic, potential, and thermal
Energy
Measure of the amount of matter in an object (same regardless of energy)
Mass
Measure of gravitational pull on an object
Weight
K = 273.13 + C
K to C
Units derived from other units (density)
Derived units
How close each trial is to each other
Precision
How close the results are to the true value
Accuracy
