Matter, Atoms, & Periodic Table

All matter is made of what

• energy

• atoms

• electrons

• compounds

A nucleus of an atom contains what two parts?

• Electrons and Protons

• Neutrons and Electrons

• Protons and Neutrons

Most of the mass in an atom is concentrated in the...

• electrons

• nucleus

• protons

• empty space

Anything that has mass and takes up space is called

• heterogeneous

• homogeneous

• matter

• density

The positive particles of an atom are

• electrons

• positrons

• neutrons

• protons

A neutron has a charge of

• +2
• No charge
• -1
• +1

True or False: Electrons have a negative charge

• True

• False

Which type of subatomic particles have the LEAST amount of mass?

• protons
• electrons
• neutrons
• nucleus

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

The chart that shows the arrangement of elements in order by their atomic number

• Electron Cloud
• Periodic Table
• amu
• Atomic Mass