Fall Semester Exam Review Crossword

Ways to safely handle the substance, health concerns, safety hazards
Can harm the skin, eats away
Hazard symbol used by emergency personnel to identify the risks posed by hazardous materials
Educated guess
idea with evidence to support it
observed or measured
reactivity or chemical composition
physical property that does not depend on amount
physical property that does not depend on density
ability to dissolve
substance that cannot be mixed
Physical change: filtration and size.
evenly mixed
unevenly mixed
atom of the same elements with different mass
atom of the same element with charge
positively charged ion
negatively charged ion
two or more elements bonded together with an overall change
unstable isotope that will decay
gives off energy
a type of radioactive decay in which an atomic nucleus emits an alpha particle
a type of radioactive decay in which a beta particle is emitted from an atomic nucleus
The one type of radioactive decay that a nucleus can undergo. What separates this type of decay process from alpha or beta decay is that no particles are ejected from the nucleus when it undergoes this type of decay
large nuclei split to form small stable nuclei
small nuclei combined to form one large nucleus
e- gains energy and jumps to higher energy level
e- returns to original level, gives off energy
range of wavelengths of radiation
the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave
location of e-