Atomic Theory & Atomic Structure_Kennedy

Front

What is the arrangement of elements organized by atomic number?

Back

Periodic Table

Front

What is the atomic number of sodium (Na)?

Back

11

Front

How many protons does an Oxygen atom have?

Back

8

Front

What is the mass of an atom equal to?

Back

Protons + Neutrons

Front

What is the average atomic mass of sodium (Na) atoms?

Back

22.99

Front

Define atomic theory.

Back

A scientific theory that describes the nature of matter, stating that matter is composed of discrete units called atoms.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom, contributing to its mass.

Front

What are electrons?

Back

Negatively charged particles that orbit the nucleus of an atom.

Front

What is the nucleus of an atom?

Back

The central part of an atom, containing protons and neutrons.