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66 Cards in this Set

  • Front
  • Back
What is an atom?
the basic unit of matter
3 subatomic particles and their charge and location
proton- positive charge, nucleus
neutron- no charge, nucleus
Electron- negative charge, outside the nucleus
why are atoms neutral despite having charged particles?
becaus eatoms have an even amount of neutrons and protons and because the subatomic particles have equal but opposite charges
chemiccle elements
a pure substance that consists entirely one type of atom
isotope
atoms of the same element that differ in the number of neutrons they contain
radioactive isotope
their nuclei are unstable and break down at a constant rate over time
chemical compound
a substance formed by the chemical combonation of 2 or more elements in a definate preportion
chemical bonds
hold atoms in compunds together
covalent bond and formation
when the mvoing electrons are located in a region between the atoms where the orbitols of the atoms overlap, forms when electrons are shared between atoms
ionic bond and formation
when 1 or more electrons are transferred to another, the attraction between opposingly charged ions
ion
positively and negativly charged ion
molecule
the smallest unit of most compounds
Van de Waals forces
intermolecular forces
suspension
the materials that seperate instead of dissolve in water
solution
when ions gradually disperse through water
solute
the components of a sloution that are distributed throughout the solution
solvent
the substance in which the solute dissolves
pH scale
a measurement for inducation to the concentration of H+ ions in a solution
acid
any compund that forms h+ ions in a solution
base
a compund that produces hydroxide ions in a solution
test tube rack
holds test tubes
bunsen burners
heat objects
Erlenmeyer flask
holds, measures, and mixes liquads
triple beam balance
measures mass
dissecting scissors
cuts specimen to be studied
spatula
transfers material from place to place
funnel
transfers liquid from one container to another; filters materials with filter paper
forceps
grasps small objects
petri dish
shallow dish used for bacterial cultures
dissecting pins
holds specimen on dissection tray
pipette
transfers measured amount of liquid
hand lens
magnifies small objects
metric ruler
measures length
safety goggles
protects eyes from fire and chemicle
grauated cylinder
measures volumes of liquid
test-tube
holds liquids
scalpel
cuts specimen to be dissected
coverslip
covers material on a microscope slide
beaker
holds and measures volume of liquid
mortar and pestile
grinds and crushes material
test-tube brush
cleans test tubes
thermometer
measure temperature
inoculating loop
trancfers bacteria from one culture to another
compund light microscope
magnifies very small objects
dropper pipette
measures out drops of liquid
What is an atom?
the basic unit of matter
3 subatomic particles and their charge and location
proton- positive charge, nucleus
neutron- no charge, nucleus
Electron- negative charge, outside the nucleus
why are atoms neutral despite having charged particles?
becaus eatoms have an even amount of neutrons and protons and because the subatomic particles have equal but opposite charges
chemiccle elements
a pure substance that consists entirely one type of atom
isotope
atoms of the same element that differ in the number of neutrons they contain
radioactive isotope
their nuclei are unstable and break down at a constant rate over time
chemical compound
a substance formed by the chemical combonation of 2 or more elements in a definate preportion
chemical bonds
hold atoms in compunds together
covalent bond and formation
when the mvoing electrons are located in a region between the atoms where the orbitols of the atoms overlap, forms when electrons are shared between atoms
ionic bond and formation
when 1 or more electrons are transferred to another, the attraction between opposingly charged ions
ion
positively and negativly charged ion
molecule
the smallest unit of most compounds
Van de Waals forces
intermolecular forces
suspension
the materials that seperate instead of dissolve in water
solution
when ions gradually disperse through water
dissecting tray
holds specimen for dissection
test-tube holder
holds hot test tubes
hot plate
heats objects
stirring rod
stirs liquids
microscope slide
holds objects for examination with compund light microscope
dissecting probe
pointed object used to examine specimen