LOCOM, Elements, and The Periodic Table Practice

Front

What is the Law of Conservation of Mass (LOCOM)?

Back

The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction. The total mass of the reactants equals the total mass of the products.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. It is made up of only one type of atom.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements chemically bond together in fixed proportions.

Front

What is the chemical symbol for Hydrogen?

Back

H

Front

What is the chemical formula for Methane?

Back

CH₄

Front

What is the difference between an element and a compound?

Back

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

Front

What determines the identity of an element?

Back

The number of protons in the nucleus of an atom determines the identity of an element.

Front

What are electrons?

Back

Electrons are negatively charged subatomic particles that exist in areas of probability outside the nucleus of an atom.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons, and it is positively charged.

Front

What is a neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom that has no charge.