crossword Flashcards
A number indicating how compact the particles are in a substance; units are usually g/mL or g/cm3
density
located in a nucleus of an atom with the protons
neutrons
two or more elements that have been chemically combined in a fixed ratio
a compound
the variable being tested by the researcher
independent variable
rusting, tarnishing, cooking, digesting
chemical change
anything that has mass and takes up space
matter
there are 100 grams in one of these
kilogram
substances that are put together but not chemically combined the parts can be separated
mixture
tool to measure liquid volume
graduated cylinder
cutting, tearing, breaking, crushing, chopping
physical change
type of mixture where the parts can be observed
heterogeneous
central region of an atom
nucleus
tool to measure mass
triple beam balance
a researcher’s prediction of results
hypothesis
a variable that responds to the changes made by the researcher; what is measured
dependent variable
the amount of space an object occupies
volume
positively charged subatomic particles
protons
a pure substance that cannot be broken down into any other substances
an element
the study of the properties of matter and how matter changes
chemistry
smallest unit of matter
atom
the type of property that tells how atoms combine
chemical property
type of mixture where the parts can’t be seen
homogeneous
the amount of matter contained in an object
mass
the type of property that can be observed with the senses
physical property
there are 100 of these in a meter
millimeter
negatively charged subatomic particle
electron
