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Physical Science Review

Across
ATOMS OF THE SAME ELEMENT WITH DIFFERENT NUMBERS OF NEUTRONS
WHERE YOU LOOK TO SEE HOW MANY VALENCE ELECTRONS AN ATOM HAS
LEAST REACTIVE GROUP
CONSISTS OF TWO OR MORE SUBSTANCES NOT CHEMICALLY COMBINED
ENERGY IS RELEASED DURING THIS REACTION
THIS GROUP OF ELEMENTS ARE THE MOST REACTIVE
THE SUM OF PROTONS AND NEUTRONS IN AN ATOM
WHERE MOST OF THE MASS OF AN ATOM IS FOUND
SCIENCE IS BASED ON _____________
PRODUCES HYDROGEN IONS AND TASTES SOUR
BOND FORMED WHEN TWO NONMETALS REACT
THE SIDE OF A CHEMICAL EQUATION THAT HAS THE REACTANTS
Down
THE NUMBER OF THESE ARE THE IDENTITY OF AN ELEMENT
BOND FORMED WITH TWO METALS REACT
PRODUCES HYDROXIDE IONS AND TASTES BITTER
THE TEMPERATURE DECREASES IN THIS REACTION
A PURE SUBSTANCE THAT CONSISTS OF ATOMS OF TWO OR MORE ELEMENTS CHEMICALLY BONDED
SCIENTISTS TRY TO AVOID _________
PRODUCED IN A NEUTRALIZATION REACTION
AN ATOM WITH MORE OR LESS ELECTRONS THAN NORMAL
THESE ELECTRONS DETERMINE THE REACTIVITY OF AN ELEMENT