COMPLETE QUESTIONS AND CORRECT
ANSWERS
●● characteristics of living things
Answer: organized, need nutrients and energy, respond to stimuli,
reproduce and develop, adapt
●● Scientific process
Answer: observation, hypothesis, experiment/further observation, data,
conclusion
●● homeostasis
Answer: internal balance, process by which organisms maintain a
relatively stable internal environment
●● element
Answer: 92 natural occurring, Carbon hydrogen, nitrogen, oxygen,
phosphorus, sulfur
●● CHNOPS
Answer: Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur
, ●● atom
Answer: smallest particle of elements
●● atomic number
Answer: number of neutrons in the atom
●● atomic mass
Answer: neutrons + protons
●● periodic table
Answer: vertical- groups, chemically similar
horizontal- periods, larger and larger
●● isotopes
Answer: atoms of the same element that have different numbers of
neutrons
●● electron shells
Answer: different energy levels referred to as electron shells
●● oclet rule
Answer: inner shell has 2 orbitals, others have 8, or multiples of 8