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8th science 1st semester vocab

Across
Measures temperature
Measures length
Basic building blocks of most matter
Describes something that occurs or repeats at regular intervals
Measures volume
Inherited traits of body structure or physical appearance
Group 2 of the periodic table
The group that is exposed to changes in the independent variable
Grouping objects based on what they have in common
A pure substance that can not be broken down
A solid that is produced as a result of a chemical reaction in solution
Differences that exist naturally among the members of a species
Measures force or weight
Down
Describes the age of an object or event in comparison to another object or event
Law that states in undisturbed sedimentary rock layers, older layers of rock will lie beneath younger layers of rock
The factor that you deliberately change in order to find out what will happen
Subatomic part of atom that have no charge
Unreactive nonmetals
Measures mass
This group of elements are very reactive nonmetals that need only one electron to have a complete outer level
Helpful inherited behaviors
The number of protons in an atom
The mass of an object divided by its volume
A vertical column of elements in the periodic table
A horizontal row of elements in the periodic table