a. practice of using a reflecting or refracting _ _ _ _ _ _ _ _ _
instrument in astronomy
b. one of a group of elements whose atoms all _ _ _ _ _ _ _
have one electron less that the stable number
c. substance that forms a conducting solution _ _ _ _ _ _ _ _ _ _ _
when dissolved in water
d. mixture formed when one kind of molecules _ _ _ _ _ _ _ _
fills the space between another kind of molecule
e. in studying the structure of atoms, atomic _ _ _ _ _ _
particles were ______ at the atoms
f. tops of houses _ _ _ _ _
g. particle that has absorbed energy and moved _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
away from an atomic nucleus (2 words)
h. substance that cannot be broken down into _ _ _ _ _ _ _ _
simpler parts by a physical change
i. to separate the grain or seeds from a cereal plant _ _ _ _ _ _
j. a radioactive, metallic element _ _ _ _ _ _ _
k. grasslike plants with hollow stems found in _ _ _ _ _ _
wet or marshy places
l. to put in possession of lands _ _ _ _ _ _ _
m. reports showing only major features of a _ _ _ _ _ _ _ _
term paper
n. state of giving off light by absorbing energy _ _ _ _ _ _ _ _ _ _ _ _
from another light source
o. chemical combination caused by electrons _ _ _ _ _ _ _ _ _ _ _ _
that are not tightly held by any particular atom (2 words)
p. ups __________; movements on a line graph (2 words) _ _ _ _ _ _ _ _
q. in grammar plural of that _ _ _ _ _
r. I did it with my own _____ _______; to do it _ _ _ _ _ _ _ _
one's self (2 words)
s. chemical process that absorbs energy (2 words) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
t. rare, chemically inert, radioactive gaseous element _ _ _ _ _
produced in the disinntegration of radium