Periodic Table/Atoms

Front

What is the basic unit of matter?

Back

Atoms are the basic unit of matter.

Tags

NGSS.MS-PS1-1

Front

What determines the identity of an atom?

Back

The identity of an atom is determined by the number of protons it has.

Front

What is the atomic number of an element?

Back

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

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements by their atomic number and groups them based on similar properties.

Front

How many protons does calcium have?

Back

Calcium has 20 protons.

Front

What are neutrons?

Back

Neutrons are subatomic particles found in the nucleus of an atom that have no charge.

Front

What are electrons?

Back

Electrons are negatively charged subatomic particles that orbit the nucleus of an atom.

Tags

NGSS.MS-PS2-3

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the relationship between atomic number and the number of electrons in a neutral atom?

Back

In a neutral atom, the number of electrons equals the number of protons, which is the atomic number.

Front

What is an isotope?

Back

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