Chemistry Semester Exam 1

Front

Where are the nonmetals located on the periodic table?

Back

Nonmetals are located on the right side of the periodic table, typically colored in red.

Front

In a chemical reaction, what are products?

Back

Products are the substances formed as a result of a chemical reaction, not the substances you start with.

Front

What is the process called when a solid changes directly to a gas?

Back

The process is called sublimation, not condensation.

Front

What does an atomic number of 8 indicate about an atom?

Back

An atomic number of 8 indicates that the atom has 8 protons.

Front

Where are metalloids located on the periodic table?

Back

Metalloids are found along the zig-zag line between metals and nonmetals, not only on the left side.

Front

What is the definition of an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.

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 are reactants in a chemical reaction?

Back

Reactants are the starting substances that undergo a chemical change.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number and properties, helping predict their behavior.