Exam 1 Flashcards
Molecular compound
Two or more non metals
Ionic compound
Composed with anion and cations
Molecular element
Occur naturally as groups of two or more atoms
-known as diatomic
Atomic element
Exists as an individual atom
Atoms
Submicroscopic particles that are fundamental building block of all matter
Molecules
Two or more joined to one another in specific geometric arrangement
Pure substance
Matter composed of only one type of atom or molecule
Mixture
Two or more different type of atom or molecule that may vary in proportion
Compound
A pure substance composer of two or more elements in fixed definite proportion
Element
A pure substance that cannot be broken down into simpler substance
Physical property
Without changing its composition
Chemical property
Changing its composition
Physical change
Changes appearance but not its composition
Chemical change
Matter changes its composition
The law of conservation of energy
States that energy is neither created or destroyed
Heat capacity
Heat needed to raise the temp of a substance by 1 degree Celsius
Specific heat capacity
Heat needed to raise the temp of 1 gram of substance by 1 degree Celsius
Neutrons
Neutral charged particle
- 67493 x 10^-27
- 0087 amu
Protons
Positive charged particle
- 67262 x 10^-27
- 0073 amu
Electrons
Negative charged particles
- 1 x 10^-31
- 00055 amu
Observation
Simple description of complex measurement
Hypothesis
Observation lead to preliminary interpretation or explanation
Experiment
Highly controlled observations designed to validate / invalidate a hypothesis
Scientific law
Statement that synthesizes past observation and predicts future ones
