Atoms and the Periodic Table Practice

Carbon atoms and oxygen atoms can combine to form the gas called carbon dioxide. Carbon dioxide:

• is an atom

• is a molecule

• is not matter

Tags

NGSS.MS-PS1-1

True or false: The number of subatomic particles affect the properties of the atom.

• True

• False

Tags

NGSS.MS-PS1-1

True or False: Protons and electrons have about the same mass.

• True

• False

What subatomic particles are found in the nucleus of an atom?

• protons and neutrons

• protons and electrons

• electrons and neutrons

• all of the above

True or False: Neutrons have a negative charge.

• True

• False

In an atom, which is true about electrons?

• They are moving inside the nucleus

• They are moving in the space around the nucleus

• They are standing still in the space around the nucleus

• All of the above

Tags

NGSS.MS-PS1-4

The atomic number of an element is equal to:

• The number of protons

• The number of neutrons

• The number of electrons

• The atomic mass

The atomic mass of carbon is 6.

• True

• False

The element symbol of Sodium is “So".

• True

• False

Lithium (Li) and Sodium (Na) are in the same period.

• True

• False