Atomic Theory and Atomic Structure Flashcard

Front

Who proposed the first atomic theory?

Back

John Dalton proposed the first atomic theory, which stated that matter is made up of indivisible atoms.

Front

What is a positive ion called?

Back

A positive ion is called a cation.

Front

How many protons does Argon have?

Back

Argon has 18 protons.

Front

What is a negative ion called?

Back

A negative ion is called an anion.

Front

What does the symbol 'C' represent in the periodic table?

Back

The symbol 'C' represents the chemical symbol for Carbon.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is an isotope?

Back

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

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus.

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 is the role of electrons in an atom?

Back

Electrons are negatively charged particles that orbit the nucleus and are involved in chemical bonding.