8th Science Vocabulary

Front

What is the atomic number?

Back

The atomic number is the number of a chemical element in the periodic system and on the periodic table that equals the number of protons in the nucleus of the atom.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a combination of multiple substances where the composition is not uniform throughout, meaning the individual components remain visibly separate and distinct from one another.

Front

What is a proton?

Back

A proton is a subatomic particle with a positive electrical charge that resides within the nucleus of every atom.

Front

What is an atom?

Back

An atom is the smallest part of a substance that cannot be broken down chemically.

Front

What are products in a chemical reaction?

Back

Products are the substances that are formed at the end of a chemical reaction.

Front

What is a compound?

Back

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

Front

What is a molecule?

Back

A molecule is the smallest unit of a chemical compound that retains its chemical properties, consisting of two or more atoms bonded together.

Front

What is a neutron?

Back

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

Front

What is 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?

Back

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