Exam 1 Flashcards
Radioactive
Atom that spontaneously undergoes a reaction of the atomic nucleus
Isotope
Different form of the same element
What is in the nucleus?
Protons and neutrons
Microscopic representation
Atomic size
Macroscopic representation
We can see it (ex. A car)
Symbolic representation
Short hand (ex. Fe, C, H, Cl)
What is different about an isotope?
Different number of neutrons (therefore different mass)
Compounds
Consist of 2 or more elements
Scientific law
Provides explanations; well supported by measurements and observation
Theory
Explains phenomena and based on observation, experiment, and reason
Hypothesis
Requires facts that can be tested
Precision
Exactness
Accuracy
How close to an actual value
Significant figures
Communicate exactness; #of didgets in a value
Orbitals
S, p, d, f
What shape is the s orbital?
Sphere
What shape is the p orbital?
Dumbbell
Nuclear fission
Large atoms split into smaller ones
Tera-
10^12
Giga-
10^9
Mega-
10^6
Kilo-
10^3
Deci-
10^-1
Centi-
10^-2
Milli-
10^-3
Micro-
10^-6
Nano-
10^-9
Pico-
10^-12