Chapter 1: Basic Concepts of Chemistry Flashcards
(26 cards)
What is matter?
Anything with mass that takes up space
What is an example of matter?
Atoms, Molecules, neutrons, protons, electrons
What is Data?
A description of characteristics
What is Quantitative Data?
Numerical Data
What is Qualitative Data?
Appearance
Based Data
What is a hypothesis?
An interpretation of observations, that can be proven or disproved.
What is a Law?
A summarization of past observations that predicts future observations
What is a Theory?
An explanation of why something happens based on gathered evidence, but cannot be proven.
What determines matters behavior?
Atoms & Molecules
What is an Atom?
A basic unit of matter
What is a molecule?
Two or more atoms bonded together
Describe the phases of matter?
Solid, Liquid and Gases
Describe the solid state of matter?
Matter that has a definite shape and volume
Describe the liquid state of matter?
Matter that does not have a definite shape, but does have a definite volume
Describe the gaseous state of matter?
Matter that does not have either a definite shape or volume
What is a Pure Substance?
Matter with a unchangeable composition
What is an Element?
A pure substance composed of a single type of atom, that cannot be chemically broken down.
What is a compound?
A pure element composed of two or more elements
A chemical formula does what?
Shows which elements are in a compound, as well as its atoms.
What is the Chemical Formula for water?
H2O
What is the Chemical Formula for methane?
CH4
What is the Chemical Formula for Ammonia?
NH3
What is a mixture?
Two substances physically mixed together
What is a homogeneous mixture?
A uniform mixture of two or more substances
