8th Grade Science EOG Review (NC 8.P.1)

Front

What describes the sequence of elements in Period 5 of the periodic table?

Back

The sequence includes highly reactive metals, relatively nonreactive metals, metalloids, reactive nonmetals, and reactive gases.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together, such as sugar.

Front

What is the melting point of Rubidium (Rb)?

Back

The melting point of Rubidium (Rb) is approximately 40°C.

Front

What is true about a chemical reaction?

Back

All of the atoms in the reactants will be a part of the products.

Front

What happens to the weight of two liquids when they react and bubbles form?

Back

Some of the atoms during the reaction escaped into the air, resulting in a total weight that is less than before.

Front

What is the definition of a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

Front

What are reactants in a chemical reaction?

Back

Reactants are the starting materials in a chemical reaction that undergo change.

Front

What are products in a chemical reaction?

Back

Products are the substances that are formed as a result of a chemical reaction.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.