SUBSCRIBE
BioS 224 Chapter 2
- atoms
- each is a different type of atom
- three major subunits
- different number of subatomic particles does what to elements
- where are neutrons and protons located
- where are electrons located
- opposite electrical charges do what to each other
- what keeps electrons orbiting the nucleus
- neutral atom
–Answer units of matter
–Answer element
–Answer neutrons, protons, electrons
–Answer gives them different properties
–Answer nucleus
–Answer orbitals
–Answer attract
–Answer attraction of negatively charged electrons for positive protons
–Answer the number of protons and electrons are the same 1 / 3
SUBSCRIBE
- neutrons and protons have a mass of
- electrons have a mass of
- chemistry
- matter
- element
- how are elements arranged
- how many naturally occuring elements? Man-made?
- how many elements are essential for life
- what elements make up 96 percent of living matter
- trace elements
–Answer one
–Answer zero
–Answer the study of matter
–Answer takes up space, has mass, exists as elements
–Answer a substance that cannot be broken down to other substances by ordinary chemical reactions
–Answer the periodic table
–Answer 92 naturally occuring, about a dozen man made
–Answer 25
–Answer carbon, hydrogen, oxy- gen, nitrogen
–Answer what most elements are, required for normal health but only in minute quantities 2 / 3
SUBSCRIBE
- atomic number
- atomic weight
- how do you get the number of neutrons
- what makes neutral atoms neutral
- isotopes
- most frequently found isotope
- all three isotopes of carbon have
- an elements atomic weight is averaged for
- radioactive isoptopes
- / 3
–Answer number of protons (written as a subscript before atomic symbol
–Answer aka mass number; the sum of neutrons and protons, written as a superscript before atomic symbol
–Answer the difference between atomic weight and atomic number
–Answer have equal number of protons and elec- trons
–Answer atoms of the same element but different numbr of neutrons
–Answer Carbon-12 (over 98 percent)
–Answer same atomic number and similar chemical properties
–Answer the proportion of each isotope
–Answer unstable and can emit subatomic particles and different types of energy