Atomic Structure

Front

What is the mass of a proton?

Back

1 amu

Front

What is the mass of a neutron?

Back

1 amu

Front

What is the mass of an electron?

Back

.001 amu

Front

What is the mass number of an atom with 10 protons and 15 neutrons?

Back

25

Front

What is an atom?

Back

Matter that cannot be broken down into a simpler substance – building blocks of life.

Front

Where is most of the mass of an atom contained?

Back

In the nucleus.

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 nucleus?

Back

The central part of an atom that contains protons and neutrons.