U1 Defenitions Flashcards
An educated guess about the solution to the problem
Hypothesis
Observations and measurements recorded during an experiment
Data
A judgement based on the results of an experiment
Conclusion
A logical explanation for events that occur in nature
Theory
Used to show that the result of an experiment is really due to the condition being tested
Control
Factor that changes in an experiment
Variable
Organized process used to test a hypothesis
Experiment
Purposely chaged
Independent
Factors that scientists want to observe
Dependent
Not changed
Control
A hypothesis must be ________
Testable
Deals with numbers
Quantitative
Characteristics that can not be easily measured
Qualitative
What you gather is called __________
Data
Pure substance that consists entirely of one type of atom
Element
Two or more atoms joined together
Molecule
A molecule that contains at least 2 different elements
Compound
Example - H2O
The number of protons
Atomic number
The number of protons and neutrons
Mass number
Shows the chemical composition of a compound
Chemical formula
A type of bond: Sharing of electrons between 2 atoms
Covalent
A type of bond: Transfer of electrons from one atom to another
Ionic
A type of bond: A weak bond between two molecules resulting from an attraction between a proton in one molecule and an electronegative atom in the other
Hydrogen
The basic unit of matter
An atom
