Matter Review

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 basic unit of matter?

Back

The basic unit of matter is an atom.

Front

How do you determine the number of protons in an element?

Back

The number of protons in an element is equal to its atomic number.

Front

What is an element?

Back

An element is a substance that is made of only one type of atom.

Front

What is the name of the element with atomic number 4?

Back

The element with atomic number 4 is Beryllium.

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 periodic table?

Back

The periodic table is a tabular arrangement of elements organized by increasing atomic number, showing periodic trends.

Front

What information can you find in a periodic table entry for an element?

Back

A periodic table entry typically includes the element's atomic number, symbol, name, and atomic mass.

Front

What is the significance of the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes, reflecting the number of protons and neutrons in the nucleus.

Front

What is an isotope?

Back

An isotope is a variant of an element that has the same number of protons but a different number of neutrons.