Atoms

Front

What is the mass of an atom, approximately equal to the number of protons and neutrons in the atom?

Back

Atomic Mass

Front

How many electrons does a neutral atom of an element with atomic number 15 have?

Back

15

Front

What is a property of matter determined by the number of positively charged protons and negatively charged electrons in a material?

Back

Electrical Charge

Front

In a solid-state, how are atoms arranged compared to a liquid state?

Back

Atoms are closely packed and vibrating in a solid state, while they have increased movement in a liquid state.

Front

What happens to the movement of atoms when a substance changes from solid to liquid?

Back

There is increased movement of the atoms.

Front

What is the arrangement of atoms in a gas compared to a solid?

Back

Gas atoms are far apart and move freely, while solid atoms are closely packed together.

Front

What is the nucleus of an atom?

Back

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

Front

What are subatomic particles?

Back

Subatomic particles are the particles that make up an atom, including protons, neutrons, and electrons.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of an electron?

Back

An electron has a negative charge.