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Science 1st semester 8th grade review

Teacher: Bowley
Across
A vertical column of elements in the periodic table
THE VALUE THAT IS USED TO EXPRESS THE ACIDITY OR BASICITY (ALKALINITY) OF A SYSTEM
An electron that is found in the outermost shell of an atom
A substance or molecule that participates in a chemical reaction
A horizontal row of elements in the periodic table
The reaction of an acid and base to form a neutral solution of water and a salt.
Any compound that increases the number of hydroxide ions when dissolved in water.
Unreactive nonmetals
The process by which one or more substances change to produce one or more different substances
Describes something that occurs or repeats at regular intervals
Group 1 of the periodic table
Down
A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
A solid that is produced as a result of a chemical reaction in solution
This group of the periodic table contains one metalloid and five metals
The substances that forms in a chemical reaction
A compound that can change color depending on conditions such as pH
A combination of chemical symbols and numbers to represent a substance
An interaction that holds atoms or ions together
Group 2 of the periodic table
This group of elements are very reactive nonmetals that need only one electron to have a complete outer level
AN IONIC COMPOUND THAT FORMS WHEN A METAL ATOM REPLACES THE HYDROGEN OF AN ACID.
Any compound that increases the number of hydronium ions when dissolved in water