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Charlie's Science Puzzle 4-29-20 grade 8

Across
A group of atoms
An objects location
An element that has the properties of metals and nonmetals
When the nucleus of an atom of an element releases energy
A change of position
Two objects exchanging energy
An element that has opposite properties of metal
A measure of how fast something moves
A speed in a specific direction
Something that changes motion
Down
A charged atom
The number below a chemical symbol
A quantity with size and direction
Resistance of an object to change speed
Velocity changing over time
Measure of mass in motion
Overall force on a object
An element that tends to be shiny
The amount of time it takes for a radioactive nucleus to decay
Likely to undergo chemical change