Atomic Structure

Front

What is the atomic number?

Back

The number of protons in the nucleus.

Front

What does the number 6 represent in an element's notation?

Back

Atomic number.

Front

What is the mass number?

Back

The number of protons and neutrons in the nucleus.

Front

If an atom has 10 protons, 15 neutrons, and 10 electrons, what is its mass number?

Back

25.

Front

What is the mass number of an atom with 3 protons and 4 neutrons?

Back

7.

Front

Define an atom.

Back

The smallest unit of matter that retains the properties of an element.

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.

Front

What are electrons?

Back

Negatively charged particles that orbit the nucleus of an atom.

Front

What is the relationship between atomic number and element identity?

Back

The atomic number determines the identity of an element.