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28 Cards in this Set

  • Front
  • Back

significant figures are important because they indicate

precision of a measurement

which unit is the smallest

microgram

which of the following would NOT be a physical change.


A. freeze water


b. boil water


c. melt gold


d. tear aluminium


e. burn gas

E

stored energy

potential energy



energy of motion

kinetic energy

convert 105 F to C

40.6

how many cals are required to raise te,p of 150 g of golf from 25c to 195c. SH is .0308

785

a diet has a total calorie intake of 1760 kcal. diet consists of 50% carbs, 35.5% proteins and 14.5 fats. what kcal fat

225

the heat of fusion is the amount of heat necessary to change one gram of substance from soloid to _______

liquid

a kilocalorie of heat is required to raise temp of

100g of water by 10C

a primary substance which all other things are composed of are

elements

a burn from steam at 100C is expected to be more severe that from boiling water at 100C because

the steam will give off a large amount of heat as condenses

the atomic number of an atom is equal to the number of

protons

what is mass of copper with 36 neutrons

65

valence electrons are located

outmost energy level of atom

isotopes of given element

have different mass numbers but identical number of protons

the modern periodic table arranged by

increasing number of protons

the identity of an element is determined by its

number of protons

how many significant figures in 45.030

five

the energy associated with the motion of particles is called

heat

the ability to do work is

energy

absolute zero is

the coldest temp possible

the change of state from solid to gas is

sublimation

the charge on the electron is

negatice

which of the following statements concern subatomic particles

three fundamental types, two of which are charged

the nucleus of an atom

accounts for only a small amount of the total volume of an atom

whats correct about D

maximum 14 electrons

regions of space where electrons are likely to be found are

oribitals