Periodic Table and Atom Review

Front

What is a sign of a chemical reaction?

Back

Signs of a chemical reaction include gas production (bubbling), temperature change, and precipitate formation (solid forms). Dissolving a substance is NOT a sign of a chemical reaction.

Front

What do elements in the same period have in common?

Back

Elements in the same period have the same number of energy levels.

Front

How many total atoms are in Glucose C6H12O6?

Back

There are 24 total atoms in Glucose C6H12O6 (6 Carbon, 12 Hydrogen, 6 Oxygen).

Front

Where can you find the mass of an element on the periodic table?

Back

The mass of an element can be found in Area 2 of the periodic table, which typically contains the atomic mass.

Front

What is the charge of a Neutron?

Back

A neutron has no charge.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing the number and type of atoms in a molecule, such as H2O for water.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.